Can't interact with app after install. Flashes/strobes (seizure warning)

[Phoenix616]

Describe the bug
After installing the app and opening it one can't interact with it and it flashes/strobes between the screen where you press "next" and some font option/welcome screen. (Also switching to another app is difficult from the app switcher. (See video))

To Reproduce
Steps to reproduce the behavior:

1. Install app (from F-Droid)
2. Open it
3. Have observe described behaviour

Expected behavior
For the app to work and not have some seizure-inducing strobeing effect...

Screenshots

Video from the effect (seizure warning!)

video_2024-01-11_15-13-57.mp4

Version Info:

• App Version: 0.15.9
• Android Version: 13 (LineageOS 20-20231021-NIGHTLY-beyond0lte)
• Device Model: Samsung Galaxy S10e (beyond0lte)

Additional context
Looks like it's re-opening the app again and again to me

[forrestguice]

Thanks for the report.
Is it doing this with the previous version v0.15.8?

There were recent changes in the welcome activity, so I'm thinking this behavior is something I might have introduced then.

[Phoenix616]

0.15.8 seems to not have the issue.

[forrestguice]

Thank you again for reporting this. It should be fixed in v0.15.10.
To test it, either navigate Settings -> General -> Welcome Screen, or reset/clear app storage.

I couldn't reproduce the bug on my devices for some reason, but the problem is apparent. The activity is recreated whenever the selected theme is changed; the flashing observed is the activity finishing/starting over and over (infinite loop).

The bug was introduced after refactoring the "theme buttons" to a spinner. For some reason the spinner's onValueChanged listener is being fired when initialized. Maybe some internal behavior is recently changed, or some accessibility related option is responsible 🤷, but I thought I was already taking necessary precautions. The fixed listener now tracks its initial position (to avoid firing unnecessarily).