Drag using touchscreen freezes the environment.

[matj1]

Describe the bug

When I drag a window in PaperWM using a finger on a touchscreen, the environment freezes, so keys and mouse input and touch inputs are ignored, until Escape is pressed.

To Reproduce

1. Have windows open.
2. Drag a window down by the titlebar with a finger on the touchscreen until the blue silhouette showing where it would be dropped appears.
3. Still dragging the window, drag it back up and drop it.
4. Try to control the window using mouse or keyboard or touchscreen, and see that nothing happens.
5. Press Escape, and see that everything works normally.

Expected behavior

I expect that the environment would not freeze after dragging.

Screenshots

Zaznam.obrazovky.z.2026-01-14.10-52-34.mp4

It is not seen in the recording, but the point is that, after the drag, I click and it does not work, and I press Escape, and it works again.

System information

Distribution: Arch Linux
GNOME Shell: 49.2
Display server: Wayland
PaperWM version: 49.0.0
Enabled extensions:

• paperwm@paperwm.github.com
• drive-menu@gnome-shell-extensions.gcampax.github.com
• system-monitor@gnome-shell-extensions.gcampax.github.com
• appindicatorsupport@rgcjonas.gmail.com
• caffeine@patapon.info

[Thesola10]

There seems to be no info in logs. From what I gather Escape in GNOME Shell unlocks any active keyboard grab, which PaperWM usually does when moving windows through Super keybinds.

I wonder if the Shell is just never informed that the window was dropped/gesture is finished by the time it is attached back into the tiling layer.

[Thesola10]

Given that the Escape key works to get the interface unstuck, and GNOME's _Draggable has an Escape key handler, I believe our touch gesture handler, which is required to keep track of where the window is being dragged, is eating the TOUCH_END event which prevents GNOME's drag-and-drop from formally ending. The only other item susceptible to ending DnD state on Escape key is our Navigator, but I confirmed its handler isn't the source.

On the other hand, pressing Escape before releasing the finger does not do anything, so the effect is conditional to the touch event being finished.