Frontend logs 'A router only supports one blocker at a time' warning on navigation changes

[grace-rehn]

Severity

Sev 3 - non blocking

Version

Earliest reported 2026.2.13137

Latest Version

I could reproduce the problem in the latest build

What happened?

When navigation changes frontend logs: A router only supports one blocker at a time

Reproduction

Change pages in the application and view warning in console.

Error and Stacktrace

A router only supports one blocker at a time

More Information

Due to a known issue with the react router - remix-run/react-router#11430

Workaround

This should not have a big effect on the application, it is a warning.

Sometimes there have been reports of the page freezing, refreshing should resolve this.

[octoreleasebot]

Release Note: Fixed 'A router only supports one blocker at a time' warnings

[team-builds-bot]

🎉 The fix for this issue has been released in:

Release stream	Release
2026.3	2026.3.6870