KB5089573 is a Windows 11 cumulative preview update (May 26, 2026) for versions 24H2 / 25H2.
Microsoft are currently investigating an issue affecting some PDF documents rendering following a recent Windows update. If your pdf document or reports appear incorrect, please open them using Adobe Reader or another non browser based pdf viewer (Edge/Chrome)
Appears to affect Arial and Times New Roman particularly, with
Missing text / blank sections
Layout distortion (especially in generated reports, SSRS, ERP outputs)
Fonts rendering incorrectly
It is assumed Microsoft will issue a fix in June