Cards fail to render sometimes #19507
Description
Checked for duplicates?
- This issue is not a duplicate
Does it also happen in the desktop version?
- This bug does not occur in the latest version of Anki Desktop
What are the steps to reproduce this bug?
Open the new reviewer or any of the preview screens. There is a chance that the card will be blank (though the text can be selected). You might have to open and close it many times.
Recordings
Screenrecorder-2025-11-16-06-10-21-417.mp4
Screenrecorder-2025-11-16-06-12-48-241.mp4
Screenrecorder-2025-11-16-06-17-06-542.mp4
Screenrecorder-2025-11-17-19-13-07-393.mp4
Expected behaviour
The card should render.
Debug info
AnkiDroid Version = 2.23.0alpha8 (f9e524a31c98e4f5d922f7b2c5217efe4d350009)
Backend Version = 0.1.62-anki25.09.2 (25.09.2 3890e12c9e48c028c3f12aa58cb64bd9f8895e30)
Android Version = 13 (SDK 33)
ProductFlavor = full
Device Info = Xiaomi | POCO | mondrian | mondrian_global | 23013PC75G | qcom
Webview User Agent = Mozilla/5.0 (Linux; Android 13; 23013PC75G Build/TKQ1.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/141.0.7390.122 Mobile Safari/537.36
ACRA UUID = 4afc3b3f-e93f-4a66-bc71-2b9476ef9eb0
FSRS = 5.1.0 (Enabled: true)
Crash Reports Enabled = true
(Optional) Anything else you want to share?
Original comment: #19452 (comment).
I tried for 7 minutes on the old study screen, but couldn't reproduce the bug.
I suspect this bug was introduced in 2.23.0alpha7-8 as I tried a lot with 2.23.0alpha5-6 and 2.22.3 and couldn't replicate it.
Research
- I have checked the manual and the FAQ and could not find a solution to my issue
- (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)