Thanks for checking. Turns out there are multiple issues going on here. 2.1.38 fixes the first one, but another issue is that this string has been translated incorrectly. The “one” category in Russian looks to include things like 141:
But Pontoon doesn’t make that clear, and the English translation further confuses the matter:
So to fix this, 1 will need to be changed to { $ cards } in that string. Would you like access to the translation site so you can fix this and any other incorrect strings you find? https://translating.ankiweb.net/#/
@kelciour if I’ve overlooked something here, please let me know