There are 2 bugs: the first one is similar to bug #7140, which is marked as fixed, but it is not!
- Used engineer #10 (1 industry + 1 black advancement)
- Reached factory #3 (reuse action)
- Selected two black advancements, activated by the black worker.
- Only had option to do 2 black advancements, while according to rules I should have 3.
- After finishing the turn, the log displays that the black track advancement is skipped, while according to rules the action must be used in its entirety, with the only exception of owned engineers (this is the second bug).

> Regarding action used in its entirety it only applies to subactions from mainboard,
if you use black worker on double black action if you used up 2 black, the 3rd one that comes from black
worker can be skipped, it also applies to factories and advantage token actions.

Even if it sounds reasonable, is there official statement in rules/FAQ/errata?

Russian Railroads #47375796

Moved my black token onto engineer #14 and took 3 movements including bonus for 5 industry movements that includes passing a doubler industry. I selecetd to double my black token on Engineer #14 space and only got 2 movements .

Whenever I take the 5 industry advancements chip and run over Factory #3, I am allowed to replay a single worker. If I use to to replay the Black Worker, I am not awarded the bonus black track movement, even though I am entitled to it by the rules. I have lost games because of this.

Airdog1990's situation just happened to me. I should have received an extra black movement but did not. This happened while using the 5 industry advancement in combination with Factory #3. This bug appears to still be here.

That's in table #91446141. boardgamearena.com/1/russianrailroads?table=91446141

I also had this happen to me in this game:
boardgamearena.com/1/russianrailroads?table=94805841

I used factory 3 to reuse the "2 black track advances" space. I had used that space with my black worker, but I did not get the extra advance.

In my case, this all happened on the same turn. I placed the black worker in that space, advanced 3 black tracks, and that triggered me getting an advantage. I chose the advantage that allowed me to advance on the industry track, which let me advance onto factory 3.

So I wonder if the issue is when you are getting two (or more, potentially) black worker bonus advances on the same turn. If you're internally keeping some flag to check that the bonus has already been taken that turn, maybe that could be the issue?

In this game, I ended up cancelling my move and doing something else, because I only wanted to reuse that space if I got the extra advancement on the track. (In case you wanted to look at the game logs)

After some investigation I (hopefully) found the cause(s) of the problem(s) with getting the extra black track advancement once again when repeating an action that was originally performed by the black worker:

1. If the action with the black worker was performed IN THE SAME TURN (examples given by LuckyYou, SuicideKing and mitcharf) as the repetition of that action, the position of the black worker has not yet been updated and the extra advancement is therefore not added, because it is assumed that the black worker is in a different position.

2. If you repeat a black worker's action TWICE or more often (if theoretically possible) in the same turn you get only ONE extra black track advancement even if the conditions were fulfilled more often (Mitcharf's guess was right, that there is just a flag whether the bonus was already taken and not a counter for potentially multiple bonuses in a single turn).

Additionally, it is even possible to get the extra advancement if you did not fulfill the requirements:
=> If the black worker is placed on an action space that allows any advancement (e.g. Engineer 5) and you repeat that action, you will get the extra black track advancement even if you perform a black advancement from another action and advance e.g. your grey or brown track with the engineer action (where the black worker was placed) that was repeated. But according to the rules, you must perform a black track advancement with the action the black worker executed. At the moment it is just checked if a black track is advanced at all.
Example: The black worker was placed on Engineer 5 in your last turn. This turn you place another worker on Engineer 10 (Industry and Black Track Advancement). First, you move your industry marker on factory #3, and repeat the black worker action from your previous turn. Now, you advance your black track (second action of Engineer 5) and already get the extra advancement. Now you can move any other track with the repeated black worker action because you already got your extra advantage. The same applies if the black worker was placed on an action space that even theoretically cannot advance black tracks (e.g. 2 roubles or industry advancement). Both cases should NOT unlock the extra black track advancement according to the rules.

Bug still active, boardgamearena.com/1/russianrailroads?table=123763693
Same situation, black worker repeated in the same turn it was placed. The log even says "skipped Black Track Advancement" while the game said "Move Not Authorized Now" when I tried using the final black rail move

Bug still active
Table #132801886
Move #36

Just a note for the above, I ended up changing my move, but initially I tried to use the black worker on Engineer 10 which triggers the factory that I had hoped would allow me to reactivate the black worker.

Reproduced this bug in table #167688312 with Black Worker on Engineer #10.

Please note that all moves occurred on the SAME turn; this may be relevant to the bug.
boardgamearena.com/table?table=167688312

Move 88: Using black worker on Engineer #10.
-> Received 1x Industry advancement and 2x Black Rail advancements.
-> Activated factory #3.
-> Copied Black Worker on Engineer #10.
-> Received 1x Industry advancement and only 1x Black Rail advancements, instead of 2x advancements.

Please note below: "Skipped a black rail advancement"
I wasn't able to perform it at all.

Move 88:
Wireshark placed [meeple_10_000000] onto "Engineer 10: Industry Advancement and Black Track Advancement" action space
Wireshark moved [industrymarker_2_008000] into [industry_slot_x_7_008000]
Wireshark moved [rail_black_1_008000] into [railslot_slot_1_8_008000]
Wireshark moved [rail_black_1_008000] into [railslot_slot_1_9_008000]
Wireshark moved [industrymarker_1_008000] into [industry_slot_x_15_008000]
Wireshark moved [rail_black_1_008000] into [railslot_slot_1_10_008000]
Wireshark unlocked natural tracks
Wireshark gained [rail_beige_1_008000]
Wireshark gained [rail_beige_2_008000]
Wireshark skipped Black Track Advancement

The bug is still not fixed.
Table #190598398
Move 149
Same story again: I put the black worker on Engineer #10, and moved the industry marker on factory #3 to immediately repeat the action on Engineer #10 again in the same turn. After not being allowed to advance on the black track for the fourth time, "I skipped the Black Track Advancement."
As during my move I also earned two advancements, I once did an undo before confirming my move, to try the same in a different order. But that didn't fix the bug either.

There is a clarification on the Ultimate Railroads on the use of repeater with wood-colored worker involved:
"Special case: If you choose a space with the wood-colored worker on it, you do not receive a second additional step."

The wood-colored worker take place of the black worker of the original Russian Railroads, so in the absense of the specification in the origianl version can this special case be applied even to the black worker and with that not provide the extra move repeated? I think so.

Page 48 of the official Ulimate railroads rulebook:
images.zmangames.com/filer_public/82/04/82048553-8cfe-49aa-9c39-6140da56f00f/ultimate_railroads_rulebook-v2_en.pdf

Bug not fixed - When using Black Worker Advantage card, "...each time you use the black worker on an action space that grants at least one black rail advancement, you get an extra black rail advancement".

Table #229378131
Move #71
Progression 29%

Didn't occur when I used "one Black or Grey track advancement space". Instead of using the black worker, the game used my gold coin that I was wanting to hold on to. The game did not give me the option to use the black worker.

same issue here; table 237289419 - round 3 when I still have one worker and two coins.

I use my worker to advance on St. Pete getting the ? for 5 industry steps. Moving over factory 3 gives me only one black step copying engineer 3. According to the official rules (faq) I should get two, see www.hans-im-glueck.de/_Resources/Persistent/8fd5118ab6c9220ea0e9bcd96910ea50f893c358/faq_mitErweiterungen_v3.pdf

Since this is an Arena game - What happens to such games with a bug? Do we have to finish the game regardless of the bug or is there a way to stop and cancel the game?

I also got this bug.
Table #373707845

I'm on mobile, so I cannot find the move number, but it was my second to last turn of the game.

The log says that I skipped the extra advancment, but I was not allowed to make it.

Found the move number for my post for game 373707845. It was move 136.