thunderbird
New swipe feature makes code blocks not horizontally scrollable
Checklist
- [X] I have used the search function to see if someone else has already submitted the same bug report.
- [X] I will describe the problem with as much detail as possible.
App version
6.302
Where did you get the app from?
F-Droid
Android version
12 (LineageOS for microG 19.1)
Device model
Fairphone 3
Steps to reproduce
- Receive an email with code block with longer length
- Try to scroll horizontall
Expected behavior
Can scroll horizontally through code block
Actual behavior
K-9 tries to move to the next email instead.
In this video I tried to move very softly. There is no difference between different levels of swiping force.
https://user-images.githubusercontent.com/1885159/189711982-42ba0437-5a46-4b64-b395-5fc6118a0197.mp4
(I know an email address is visible in the video, that's okay, it's just an alias and I'll replace it if it gets spam)
Logs
No logs, but I've included an anonymized version of the email I could trigger this on. I dragged this email into Inbox in Thunderbird to be able to confirm the anonymized version still triggers the bug in K-9 Mail but I'm sure you have your own tricks already :)
Re- org.fdroid.fdroid.debug Crash Report (#6).zip
The HTML doesn't make the WebView itself scroll horizontally. But the message contains an inner scrolling container. I'm not sure if/how we can detect that situation and disable the touch handling of the view pager in that case.
As a work-around you can swipe left/right using two fingers. The view pager will ignore all touch gestures involving more than one finger.
I don't know how to work around this issue without injecting JavaScript into the WebView. But for security reasons we disable JavaScript. And I don't think this bug is important enough to change that.
If someone has an idea how to deal with this, please let us know.