Help menu -> Contents ->

Select Qt Safe Renderer Safety Manual

change selection to search -> type text to search and click search

Qt Creator crashes frequently. About 4 or 5 times and it was repeatable.

But the problem does not reoccur if some other help file is selected and searched, and then again search is performed. After that reproducing the issue is not easy.

Perhaps some indexing was not done in the crash cases? Just lucky guessing.

In order to again reproduce this issue, perhaps a new fresh installation would be required.

After a quick query, this incident might be related to the bug https://bugreports.qt.io/browse/QTBUG-66816