HTML Autorun stopped working in Firefox

Firefox 71.0 (64-bit)
UI Vision RPA 5.3.10

See video for scenario:

Is working for Chrome / Opera

The scenario has Firefox as default browser. Firefox cache was cleared.

If video is too low of a resolution or has any other problems, let me know so I can try to make a more useful video. Let me know what other information might be useful in reproducing the problem.

Thank you for taking a look.

Issue fixed in V5.3.17

I tried it out. The issue is indeed fixed in V5.3.17. Works perfectly in my testing.