Created attachment 1296582 [details] Screenshot of incorrectly placed list. Description of problem: "Add a New World Clock" dialog autocompletion list isn't displayed or placed incorrectly on multimonitor configuration on Wayland Version-Release number of selected component (if applicable): 3.24.0 How reproducible: Run Gnome-clocks on system with two monitors (Combined displays) on Gnome Wayland session. Bug not happens on left monitor, but happens if "Add a New World Clock" dialog aligned with right edge of left screen and not happens if aligned with left edge of right monitor. Steps to Reproduce: 1. Run gnome clocks 2. Switch to "World" tab in Gnome clocks 3. Click "New" button. 4. Move appeared "Add a New World Clock" dialog window on the right monitor, see attached screenshot (need 2 monitors, not tested on more, which monitor is primary seems no matter). 5. In "Add a New World Clock" dialog window's only text field start type some city's name. Actual results: Autocompletion list is moved right on horizontal resolution of left monitor. In some cases Autocompletion list not shows at all: if monitors resolution is equal or right's horizontal resolution is smaller than left or "Add a New World Clock" dialog is closer to right edge of right monitor than left's monitor horizontal resolution. (Autocompletion list seems to be placed outside visible area). Expected results: Autocompletion list is placed just under "Search for a city" text input field aligned with it horizontally. Additional info: I've reported same in Gnome's bugzilla with more screenshots but it seems no one have read that. Nothing changed with the bug since that. Probably similar bugs happens in other Gtk+3 apps but such lists are not very common so I haven't seen other examples.
For me on 3 monitor setup (external:secondary, external:primary, laptop:secondary), all are 1920x1080, f26, wayland gnome shell session. gnome-clocks was on middle (primary) monitor but completion dialogue was shown in the middle of right (secondary) monitor.
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