[SOLVED] noVNC - Error: Permission denied to access property Symbol.toPrimitive

[mrE]

I have a two canvas blocker addons enabled, when I disable the console works again.
I was using this addon for months without issues in FF+Proxmox until now.
I re-enabled one of the addon and it works, I leave this post just in case.
- - - - -
It was working a few moments ago on the console, I left the browser FF some moments
When I return I click on the left menu/console of any VM this error appears, but If I click on the top rihbutton

noVNC encountered an error:
Error: Permission denied to access property Symbol.toPrimitive
https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:8253:17
$$$core$rfb$$RFB@https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:8253:17
connect@https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:12312:30
start/<@https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:11380:28
success@https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:11233:13
API2Request/xhr.onload@https://192.168.16.1:8006/novnc/app.js?ver=1.0.0-3:10986:33

 

[Sralityhe]

Can confirm when using canvasblocker and FF. Worked with PVE5 but not under PVE6

Error: Permission denied to access property Symbol.toPrimitive

Any fix? I dont want to disable canvasblocker.

Thanks!