Prevent parent window margins from being used in UI doc child frame. … #506

Job	Run time
test (ubuntu-latest, 27.2, false)	45s
test (ubuntu-latest, 28.2, false)	46s
test (ubuntu-latest, 29.3, false)	47s
test (macos-latest, 27.2, false)	1m 59s
test (macos-latest, 28.2, false)	1m 58s
test (macos-latest, 29.3, false)	2m 45s
test (windows-latest, 27.2, false)	1m 20s
test (windows-latest, 28.2, false)	1m 7s
test (windows-latest, 29.3, false)	1m 6s
test (ubuntu-latest, snapshot, true)	48s
test (macos-latest, snapshot, true)	2m 24s
test (windows-latest, snapshot, true)	1m 29s
	17m 14s

Provide feedback