Firefox candidate 85.0-1 no longer launches zoom and other links

After updating firefox to the latest/candidate build 85.0-1 it no longer follows links to zoom and other applications. Simply nothing happens after clicking a link. Is anyone else experiencing the same issue?

I can confirm the regression (tested with This works with firefox 84.0.2-1 in the stable channel (revision 477), and it doesn’t work any longer with firefox 85.0-1 in the candidate channel (revision 483).

Would you mind filing an upstream bug?

Bug submitted as:

It looks like this issue was resolved in 85.0.1-1 that was just released in latest/candidate. Starting a test call at now opens the link as expected.