Window Suggestion Feature Not Functional on Wayland

[pakucon]

Hi,

I'm currently using the Tiling Shell extension on GNOME 48 under Wayland. I've noticed that the "Window Suggestion" feature does not work as expected, even though I have explicitly enabled all related settings:

• Window suggestion for the tiling system
• Snap assistant
• Screen edge snapping

No visual indicators or suggestions appear when I try to move a window to the screen edges or corners. I've tried reloading GNOME Shell, logging out and back in, and even restarting the system — but the issue persists.

• Tiling Shell version: 52 (16.3)
• GNOME version: 48
• OS: CachyOS
• Kernel version: 6.14.2

Let me know if there’s any debug info I can provide to help!

Thanks in advance for your support and great work on this extension 🙌

[pakucon]

❯ journalctl --follow /usr/bin/gnome-shell
Apr 20 19:21:25 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:26 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:30 cachyos-ucon gnome-shell[1364]: JS ERROR: TypeError: this._scrollView.get_hscroll_bar is not a function
SuggestionsTilePreview@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3508:22
buildTile@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3654:12
draw_layout/this._previews<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1276:19
draw_layout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1253:41
relayout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1320:10
_openWindowsSuggestions@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4521:35
_onWindowGrabEnd@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4493:10
enable/<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4013:14
@resource:///org/gnome/shell/ui/init.js:21:20
Apr 20 19:21:30 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:31 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:33 cachyos-ucon gnome-shell[1364]: JS ERROR: TypeError: this._scrollView.get_hscroll_bar is not a function
SuggestionsTilePreview@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3508:22
buildTile@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3654:12
draw_layout/this._previews<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1276:19
draw_layout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1253:41
relayout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1320:10
_openWindowsSuggestions@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4521:35
_onWindowGrabEnd@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4493:10
enable/<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4013:14
@resource:///org/gnome/shell/ui/init.js:21:20
Apr 20 19:21:33 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:34 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:36 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:21:38 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:24:37 cachyos-ucon gnome-shell[1364]: Source ID 642114 was not found when attempting to remove it
Apr 20 19:28:55 cachyos-ucon gnome-shell[1364]: Object Gjs_ui_messageTray_Notification (0x614d61e75f20), has been already disposed — impossible to emit any signal on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
== Stack trace for context 0x614d5d112c10 ==
#0 614d5d20af18 i resource:///org/gnome/shell/ui/messageTray.js:484 (1d7951b40a10 @ 74)
#1 614d5d20ae70 i resource:///org/gnome/shell/ui/messageTray.js:480 (1d7951b409c0 @ 63)
#2 614d5d20ade8 i resource:///org/gnome/shell/ui/messageList.js:735 (1d7951b55470 @ 33)
#3 614d5d20ad58 i resource:///org/gnome/shell/ui/init.js:21 (35d01fe7ea60 @ 48)
Apr 20 19:28:55 cachyos-ucon gnome-shell[1364]: Object Gjs_ui_messageTray_Notification (0x614d61e75f20), has been already disposed — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
== Stack trace for context 0x614d5d112c10 ==
#0 614d5d20af18 i resource:///org/gnome/shell/ui/messageTray.js:490 (1d7951b40a10 @ 148)
#1 614d5d20ae70 i resource:///org/gnome/shell/ui/messageTray.js:480 (1d7951b409c0 @ 63)
#2 614d5d20ade8 i resource:///org/gnome/shell/ui/messageList.js:735 (1d7951b55470 @ 33)
#3 614d5d20ad58 i resource:///org/gnome/shell/ui/init.js:21 (35d01fe7ea60 @ 48)
Apr 20 19:29:37 cachyos-ucon gnome-shell[1364]: Source ID 662113 was not found when attempting to remove it
Apr 20 19:32:06 cachyos-ucon gnome-shell[1364]: JS ERROR: TypeError: this._scrollView.get_hscroll_bar is not a function
SuggestionsTilePreview@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3508:22
buildTile@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:3654:12
draw_layout/this._previews<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1276:19
draw_layout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1253:41
relayout@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:1320:10
_openWindowsSuggestions@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4521:35
_onWindowGrabEnd@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4493:10
enable/<@file:///home/jusron/.local/share/gnome-shell/extensions/[email protected]/extension.js:4013:14
@resource:///org/gnome/shell/ui/init.js:21:20
Apr 20 19:32:07 cachyos-ucon gnome-shell[1364]: Error in size change accounting.
Apr 20 19:32:10 cachyos-ucon gnome-shell[1364]: Error in size change accounting.

[momoRaza]

I have the same issue, I'm on Arch Linux and after upgrading from Gnome 47 to 48, tilling suggestions don't work

[domferr]

Thank you for sharing this! I can confirm Windows Suggestions not working on GNOME 48. I hope to fix this soon!

[domferr]

Here it is a fix! Let me know if it works, thank you!

[email protected]

[momoRaza]

@domferr working great on gnome 48, thank you!

[h44z]

@domferr it works now in Gnome 48, thanks!!

I have one more suggestion/improvement: can we display the suggestions in all tiles, not just one?
If one suggestion is selected, only show the remaining ones in the remaining tiles.

E.g:

Before Tiling:

Suggestions:

[pakucon]

Thank you so much for your quick response and for fixing the bug! I really appreciate the effort and time you put into improving the extension. It’s working great now!

Keep up the awesome work — your contributions make a big difference. Wishing you all the best in your development journey! 🙌