[44] Backport screen recorder improvements

Allowing a smoother recording experience in many cases.

• !2197 (merged)
• !2609 (merged)
• !2752 (merged)
• !2597 (merged)
• !2753 (merged)
• !2754 (merged)
• !2650 (merged)
• !2782 (merged)

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Only concern here is probably the EasyScreenCast extension.