I can't pinpoint exactly, but in my original bug description I noted the version where the problem occurs, and a previous version where the problem doesn't occur. So it was introduced (on Windows) somewhere after v3.5.5.3 up to and including 4.0.
> We could try bibisecting on GNU/Linux,
> but only if the high-contrast theme detection worked
> there as well. Nicciglen -- Do you know?
Sorry, I haven't tried LibreOffice on Linux for quite a long time.
@Qubit
> Question: When did the behavior change?
I can't pinpoint exactly, but in my original bug description I noted the version where the problem occurs, and a previous version where the problem doesn't occur. So it was introduced (on Windows) somewhere after v3.5.5.3 up to and including 4.0.
> We could try bibisecting on GNU/Linux,
> but only if the high-contrast theme detection worked
> there as well. Nicciglen -- Do you know?
Sorry, I haven't tried LibreOffice on Linux for quite a long time.