@gaelle @Myliak I already reported this a while ago, but it was marked as CNR (VB-50885). The same thing can also happen by tiling the page.

@Ranaida Personally, I think the behaviour is expected, an as it should be, but here you can ask for whatever you want. I use a 1200x1600 portrait monitor for browsing forums, and for my work. I use a 1920x1080 landscape monitor for watching video, news, etc. If I was watching a long documentary at the end of the day, and wanted to continue watching it, I would not want it to open on my primary portrait monitor if I closed the landscape window last.

I use a dual monitor system. 1920x1080 Portrait, which works best at 100% zoom 1600x1200 Landscape, which is OK up to 150% zoom or more. It would be nice to independent settings for each monitor.