Card Contents Disappear when Drawing

[slang19]

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?

On my Hanja cards whenever I draw a stroke any other content on the card disappears. Even more annoying, it usually stays off once the stroke is done. Video attached.

Screen_Recording_20250506_094814_AnkiDroid.mp4

I restarted my phone and cleared Ankidroid cache and it still does this behavior. This behavior just started today, I didnt knowingly update the app (possibly my phone updated on its own accord?). It says Im on version 2.20.1.

Expected behaviour

The card contents should not chnage while drawing.

Debug info

AnkiDroid Version = 2.20.1 (e32a82c33646807ea19623c9c88be38965bc07e6)

Backend Version = 0.1.48-anki24.11 (24.11 c47638ca36f99dd4f3b81ae82d964aec66e392e0)

Android Version = 14 (SDK 34)

ProductFlavor = play

Manufacturer = samsung

Model = SM-F731U1

Hardware = qcom

Webview User Agent = Mozilla/5.0 (Linux; Android 14; SM-F731U1 Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.111 Mobile Safari/537.36

ACRA UUID = a33b05a4-8f83-4170-be11-9e4ad518cf43

FSRS = 1.4.3 (Enabled: true)

Crash Reports Enabled = true

(Optional) Anything else you want to share?

No response

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)

[welcome]

Hello! 👋 Thanks for logging this issue. Please remember we are all volunteers here, so some patience may be required before we can get to the issue. Also remember that the fastest way to get resolution on an issue is to propose a change directly, https://github.com/ankidroid/Anki-Android/wiki/Contributing

[david-allison]

@slang19 Could you export a note which exhibits this behaviour, and attach it as a zipped apkg here.

Please include media.

Can't reproduce currently on my Pixel 9 Pro. I suspect this is an Android System WebView/Android issue, but we can look into it to see if we can work around it.