Changing note types from the dialog breaks the undo stack

[ZornHadNoChoice]

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?

1. Do something such as deleting a deck.
2. Go to the browser and change the note type of some notes, from the change note type dialog.

Notice that you can only undo the note type change.

Expected behaviour

You can undo things before the note type change.

Debug info

AnkiDroid Version = 2.24.0alpha4 (ae379be94b660291e90d72501f5725ed396b9a80)  
Backend Version = 0.1.63-anki25.09.2 (25.09.2 3890e12c9e48c028c3f12aa58cb64bd9f8895e30)  
Android Version = 13 (SDK 33)  
ProductFlavor = full  
Device Info = Xiaomi | POCO | mondrian | mondrian_global | 23013PC75G | qcom  
WebView Info = [com.google.android.webview | 749919233]: Mozilla/5.0 (Linux; Android 13; 23013PC75G Build/TKQ1.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/143.0.7499.192 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?

Possibly a bug:

1. Make a basic and reversed note.
2. Swap its cards (from the change note type dialog, only swap Card 1 and Card 2).
3. Set the display order to created time (oldest first).

Anki Desktop displays the Back -> Front first, while AnkiDroid displays it second.

A little suggestion

Improve the contrast for the cloze/IO note types names, in dark/black themes:

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)

[david-allison]

@Haz3-jolt FYI, feel free to assign to me or take this on

[Haz3-jolt]

This is an issue with modSchema(), and how it handles marking schema changes. I would need to see anki desktop's code to see how they deal with schema changes triggering a sync

[david-allison]

Added:

• architecture: Reimplement & document 'schema change' code #20246