(In reply to Hsin-Yi Tsai [:hsinyi] from comment #7) > (In reply to Hsin-Yi Tsai [:hsinyi] from comment #6) > > Interesting ... I got the expected result on Release 74 but got 0 on Nightly 76. > Aha, not really expected result, it was always 115 on various release versions. What I observe is that if we don't sepcify size while opening window, it use the same size of opener. And if the popup could not be full visible on screen on specified position (left=300), then we will offset its position to make it could be full visible. Update test with specifying the window size.
Bug 1338831 Comment 10 Edit History
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(In reply to Hsin-Yi Tsai [:hsinyi] from comment #7) > (In reply to Hsin-Yi Tsai [:hsinyi] from comment #6) > > Interesting ... I got the expected result on Release 74 but got 0 on Nightly 76. > Aha, not really expected result, it was always 115 on various release versions. What I observe is that if we don't sepcify size for popup, it will use the same size as opener. And if the popup could not be full visible on screen on specified position (left=300), then we will offset its position to make it could be full visible. Update test with specifying the window size.