Created attachment 132297 [details]
Empty presentation with single Checkers slide transition
The attached presentation is an empty file with Checkers slide transition on the slide.
Open and play it (if your Impress is compiled with GTK3 support, start as: "SAL_USE_VCLPLUGIN=gtk ./soffice --impress").
About 1/3 way through there is a white flash.
Observed with v22.214.171.124, 126.96.36.199, 5.4 master build / Ubuntu 16.04.
Not reproducible with v188.8.131.52. => regression
There is a bit of resemblance to bug 95479 and bug 99685, but they don't seem to be related.
Regression introduced in range: https://cgit.freedesktop.org/libreoffice/core/log/?qt=range&q=ba90813d17cf35cfb67585d6f119d3ddb30f5978..fe88fe6f828597fe2645a20c1a07716216a810c3
bibisected with lo-linux-dbgutil-daily-till51
Interestingly I don't get a flash at that point in the bibisect repo, so I looked further, and the range for me is this:
(In reply to Xisco Faulí from comment #1)
> Regression introduced in range:
> bibisected with lo-linux-dbgutil-daily-till51
As I noted in bug 99685, I get this range if I bibisect that issue.
I would assume the issues are different, though.