GnuCash Version 5.5, Build ID: 5.5+(2023-12-16)
After researching, I saw that this env variable needed to be set for Reports to display…
WEBKIT_DISABLE_COMPOSITING_MODE=1
But how and where?
On the commandline, setenv WEBKIT_DISABLE_COMPOSITING_MODE 1 did it. Note the lack of = sign. After that, gnucash can be launched from the same commandline and display Reports.
For graphical, find it in the “start” menu under Office, then hover over GnuCash, and instead of selecting it, use the right mouse button to bring up another menu, Edit Application.... Switch tabs to Application.
Environment Variables: WEBKIT_DISABLE_COMPOSITING_MODE=1
then, OK
Reports should display now whenever GnuCash is launched from the menu.