Scrolling unresponsive in LyX 2.4.0

[Jean-Marc Lasgouttes]

Le 07/06/2024 à 22:01, Richard Kimberly Heck a écrit :
> On 6/7/24 15:13, Hung-Tzu Chang via lyx-users wrote:
>> I recently installed LyX 2.4.0 on macOS 12.7.5(intel) and found that 
>> scrolling plain-text (revtex4-2, with several sections with math, 
>> comments and LyX note plus an appendix but no figures) documents 
>> created by LyX 2.3.7 tends to lag. This can be reproduced by quickly 
>> scrolling the document up and down by 3-5 times. Sometimes the program 
>> would stop responding and recover after a few seconds. Converting the 
>> document to LyX 2.4 format with lyx2lyx does not help. Also this 
>> behaviour occurs with both Qt5 and Qt6 libraries (Qt 5.15.12 and Qt 
>> 6.6.2 from Homebrew). This did not happen to LyX 2.3.7.
> 
> I believe this is a known issue, which will be fixed (we think!) for 2.4.1.

Unfortunately I am not so sure about that :( It is not normal to have a 
regression in 2.4.0.

Hung-Tsu, do you have a document that you could share with me for testing?

Even better, do you know how to use a profiler like Instruments to see 
where the time is spent? I did all the testing on Linux, and there is a 
possibility that caching of glyphs behave differently on macOS.

Do you have math previews enabled? Does it make a difference if you 
change the setting?

JMarc