Comment 7 for bug 1921949

I does not reproduce in all situations, but many, and deterministically.

Here is a concrete reproducer:

 1. Open Math Formula editor.
 2. Select +[ ] symbol (unary plus) from the list.
 3. Enter "abc" and click outside symbol + string (leaving edit mode).
 4. <Ctrl>+<Q> - "Save changes" message box pops up.
 5. Click at the string "abc" (entering edit mode again).
 5. <Ctrl>+<Q> exits Math Formula editor without question.

NOT reproduced with Version: 7.1.1.2 / LibreOffice Community
Build ID: 10(Build:2)
CPU threads: 8; OS: Linux 5.11; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US

REPRODUCED with Version: 7.1.3.0.0+ / LibreOffice Community
Build ID: 66319fd36564f55feb9669b3f117176f4ef4c939
CPU threads: 8; OS: Linux 5.11; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:libreoffice-7-1, Time: 2021-03-20_11:15:06

NOT reproduced with Version: 7.2.0.0.alpha0+ / LibreOffice Community
Build ID: 0dc9da5df470b9c345e78dbe9553d81b9e4a7435
CPU threads: 8; OS: Linux 5.11; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:master, Time: 2021-04-29_15:55:29

So this looks like a regression on the 7.1 release branch between 7.1.1.2
and 7.1.3.0.0+ as of March 20.