On latest AnkiMobile update, redo button acts as an undo button. So basically undo and redo both only can perform undo. Will attempt to add video to showcase problem.
Ouch. Thanks for the report, I’ll have a fix for this in the next update.
Any idea on when you think the next update might roll out? Is it like a big one that takes time or a smaller one that can be released soon?
A stable release is waiting on a change to burying and subsequent testing. In the mean time if you’d like access to a build with a fix for this issue, please see Beta Testing - AnkiMobile Manual