Back to these issues, apparently it happens with REPORTBEHAVIOR 80 as well (i.e. GDI counter runs up and objects are not freed after report is printed). The GDI resource exhaustion may take longer with RB80 which may be using less GDI resource than RB90, but the same problem will occur eventually.
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https://www.windowslatest.com/2021/03/18/windows-10-march-and-hotfix-updates-have-issues/
There is some acknowledgement that the KB5000802, and KB5001567, KB5000808 meant to fix the printer BSOD have introduced other bugs, which is what we're experiencing. The only solution so far is to uninstall these KBs and pause the Windows Update (they will re-install if automatic updates are enabled).

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>>>>In my case, the GDI resources are exhausted regardless of the selected printer. I replicated the issue using multiple printers, including Microsoft Print to PDF.
>>>>I've read before the docs you suggested. It says that the issue originated with KB5000809 and it was fixed in KB5001565, but in my case I had to actually uninstall KB5000808 (after uninstalling KB5001567 that was supposed to fix it).
>>>>My suspicion is that there may be multiple bugs introduced with the KB updates attempting to fix the printer driver conflicts. The GDI problem could be one of these collateral bugs.
>>>>