The tablet in question is a Samsung Galaxy Tab S 8.4.
It crashes immediately when I tap ‘study’ on a deck which has the whiteboard feature enabled, or if if the feature is enabled while studying.
The only way to make AnkiDroid usable after this is to delete the configuration settings in the Android software manager, and not enable the whiteboard feature until it (hopefully) gets fixed.
I already sent an error report with the app’s reporting tool.
On my phone, a note9 the feature works as intended, without crashing.
Hopefully it gets fixed sooner or later, I use the whiteboard feature in kanji learning.
You already sent an error report with the app’s reporting tool, but in addition to that, you might want to open an issue topic on the AnkiDroid developer page, for smoother problem resolution.
The following is a quote from the developer’s reply to a review.