Massive degradation from 4.2 to 4.3

[EvilGremlin]

This issue respects the following points:

• [X] I have read the FAQ
• [X] I have searched for existing issues
• [X] The issue affects the Notes Android app, neither the Notes server app nor the Nextcloud Android app.

Describe the bug

4.3 versions have insanely long loading time in formatted view (like 10 seconds when it used to be immediate in 4.2) and "...was edited outside of editor..." diff popup almost every time for no reason, often showing exactly same content in both columns.

Expected behavior

No response

Notes Android version

4.3.x

Notes server version

4.10.1

Nextcloud Android version

3.29.1

Nextcloud version

28.0.8

Device

irrelevant

Android Version

9.0 custom build

App Store

• [ ] Google Play Store
• [X] F-Droid
• [ ] Huawei App Gallery

Stacktrace

No response