Scrolling unresponsive in LyX 2.4.0

[Hung-Tzu Chang]

Hi,

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.

Thanks!

Best,
Hung-Tzu
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