In v5.3.0 you will loose the focus to the input field after typing 1 character:
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<$edit-text field=selection placeholder=Wähle.../>
In v5.3.0 you will loose the focus to the input field after typing 1 character:
Suche nach Datum
<$edit-text field=selection placeholder=Wähle.../>
I did create a new issue for this one: [Bug] v5.3.0-prerelease: text input looses focus if field in currentTiddler is modified · Issue #7441 · Jermolene/TiddlyWiki5 · GitHub