Runaway memory consumption during copy-paste operation

[Rudi Gaelzer]

My system:
LyX 2.4.1
Qt Version: 6.7.2 on platform wayland
Fedora Linux 40 (KDE Plasma)

Since the last update, I noticed something that must be some kind of bug.
I frequently edit LyX files (exercise lists, tests, etc) employing copy-paste 
operations from earlier files.
Since the last update, I noticed that very frequently a copy operation will 
hang the box, starting to first consume all available RAM and then all 
available swap, rendering thus the machine almost completely unresponsive.
The only thing I can do then is to kill the lyx process.

This happened already with two different machines (notebook and desktop), both 
with the same configuration.  All the times this happened, the original copied 
text was inside a branch.  I don't know if this is relevant.

Has anyone ran into the same problem?
-- 
Rudi Gaelzer
Physics Institute - UFRGS
BRAZIL
Registered Linux user # 153741