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#169090: "Undo wouldn't undo Solar Probe even before drawing any cards, maybe Pluto trade caused it"

notabug: This is not a bug

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terraformingmars #670291201

What happened ? Please select from below

The interface blocked me to do some game action authorized by the rules

What happened ? Please select from below

The interface blocked me to do some game action authorized by the rules

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#	Status	Votes	Game	Type	Title	Last update

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14. May 2025 00:10 • Skelebat • Bug has not been reproduced by delopers yet:

I tried to reload and it didn't fix it.

14. May 2025 00:44 • FrankJones • Bug has not been reproduced by delopers yet:

If your first action drew a card, you cannot undo your second action, because the game will try to undo your entire turn starting from before the first action.

If you want to undo a single action within a turn, you need to use the "multi-step undo" setting, which is listed as "Alpha", but it works fine (Though it makes a mess of the game log.

So, most likely no bug here.

15. May 2025 08:34 • xspuipuke • Bug has not been reproduced by delopers yet:

I'm not sure that is correct, Frank. The game normally undoes until the last point where new information was revealed (not consistently though). Maybe this is one of the inconsistencies.

16. May 2025 11:33 • happy-smile • Bug has not been reproduced by delopers yet:

As xspuipuke says, it is normally possible, do something wrong here

18. May 2025 14:59 • Victoria_La • Bug has not been reproduced by delopers yet:

I don't understand the sequence - at what point you traded with Pluto? If any draw happen - you can undo oy up to moment after last draw

19. May 2025 22:14 • happy-smile • Bug has not been reproduced by delopers yet:

Solar Probe has earth tag, so allows you to draw a card as Point Luna. Then you increase a colony track, find out you cannot decrease another track, you are locked because you already drawn a card..

20. May 2025 00:07 • FrankJones • Bug has not been reproduced by delopers yet:

Yeah but what does this have to do with the non-earth-tagged "Solar Probe"? Solar probe is a science space event. Point Luna is not relevant to this card.

20. May 2025 08:53 • happy-smile • Bug has not been reproduced by delopers yet:

Sorry my bad, that was another bug report.

I checked the game and he didn't play Mars university or Olympus conference, so no other card draw except the main action that could trigger.

Then only thing that makes sense is that the action tried to undo until Pluto trade. It was probably trying to undo until moment to your last card draw. But with Pluto last part of that action is other people's card draw, so that is probably why it failed (like undo does not count with possibility that other other people drawn a card, so instead of stop there, it fails)

22. May 2025 09:16 • xspuipuke • Bug has not been reproduced by delopers yet:

That must be it, happy-smile, because I noticed the failed undo on other things after a Pluto trade and always wondered why it happens.

4. Jun 2025 00:20 • FrankJones • More information is requested by developers to reproduce this bug:

I'll try to replicate this, and do some checks with undoing a series of actions back to a card draw.

4. Jun 2025 14:59 • FrankJones • This is not a bug:

We can now confirm that after a player passes, the other player's "undo" will only undo to the beginning of the turn, NOT all the actions that were done after the other player passed. Which, technically, is correct. A player in a 2-player game making plays after the opponent passed is technically taking a series of turns, not just one long turn with lots of actions. I'll mark this as "not a bug".

5. Jun 2025 00:30 • happy-smile • This is not a bug:

I don't think this report was about undoing more than 1 turn (2 actions). I understood that first action was trade on Pluto and second action was Solar Probe and then the player tried to undo second action. But it failed because it did not undo only second action but tried to undo also first action which was card draw (it should work the same as with Development center for example, undo only second action in this case).

But I played a game today when player did Undo for trade on Luna after his trade with Pluto and that worked fine, so this is maybe already fixed.

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LB_CANCEL Update report

#169090: "Undo wouldn't undo Solar Probe even before drawing any cards, maybe Pluto trade caused it"

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