Hi, this has been reported sporadically over the past few days but thankfully seems quite rare. SimBrief hadn’t been updated or changed when this started to happen a few days ago, so I suspect a bug in the latest update to Chromium-based browsers.
Something specific about the SimBrief Briefing page seems to be triggering it, but I haven’t been able to test any fixes yet since I don’t have this issue on my PC.
Can you please try the suggestions in this thread to see if they help at all: The screen locks - #4 by SimBrief
Best regards,