Hi Robert,
This is a known regression tracked as issue #21885 on GitHub. The fix was merged on March 3 and is included in the official 17.3.0 release notes, so it should be in the final build that shipped on April 2.
A couple of things worth checking:
- Confirm your exact version — make sure you’re on the final 17.3.0 and not an RC build, as the regression was present in the RC previews.
- Check your data type config — if your picker has
allowedContentTypesset alongside the folder-only filter, there’s a known edge case where folders can still be rejected.
If you’re on the final 17.3.0 and still seeing the issue, it’s worth opening a GitHub issue with your data type configuration so the team can take a look.
/Bishal