Empty Save As filename after applying digital signature - macOS Tahoe 26.4.1
After updating to macOS Tahoe 26.4.1, the "Save As" dialog
shows an empty filename field after applying a digital
signature in Adobe Acrobat Pro.
Setup:
- Mac mini M4 (2024)
- macOS Tahoe 26.4.1
- Adobe Acrobat Pro 26.001.21529 (Universal, Apple Silicon)
Steps to reproduce:
1. Open any PDF
2. Apply digital signature
3. Save As dialog appears with EMPTY filename field
4. Cannot even paste text into the field
Same Acrobat version on MacBook Pro M2 with macOS 26.3.1
works correctly - filename is auto-filled as expected.
Issue is intermittent - sometimes works, sometimes not,
but mostly fails. Same behavior across iCloud Drive,
Dropbox, and local Desktop locations.
Issue started immediately after macOS 26.4.1 update.
Reinstalling Acrobat (clean install via Creative Cloud)
did not fix the problem.
Business impact: We sign 50+ PDFs daily. Manual filename
entry per file is not workable.
Please prioritize a fix or workaround.
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