vLogs from running WAYLAND_DEBUG=client ./qtquick_hide_window
============================================================

On iMX.6 device (Vivante GPU)
-----------------------------
Hiding window
[2439139.786] wl_buffer@19.release()
[2439140.039] wl_callback@21.done(14)
[2439141.190]  -> wl_surface@15.attach(nil, 0, 0)
[2439141.382]  -> wl_surface@15.commit()
Done hiding window
[2439142.823] wl_surface@15.leave(wl_output@8)
[2439142.968] wl_keyboard@10.leave(15, wl_surface@15)
[2439143.183]  -> wl_display@1.sync(new id wl_callback@21)
[2439143.561] wl_display@1.delete_id(21)
[2439143.693] wl_callback@21.done(15)
[2439160.801]  -> wl_surface@15.attach(wl_buffer@20, 0, 0)
[2439161.298]  -> wl_surface@15.damage(0, 0, 1030, 801)
[2439161.801]  -> wl_surface@15.commit()
[2439161.978]  -> wl_display@1.sync(new id wl_callback@21)
[2439163.121] wl_display@1.delete_id(21)
[2439163.354] wl_surface@15.enter(wl_output@8)
[2439163.492] wl_keyboard@10.modifiers(16, 0, 0, 0, 0)
[2439163.700] wl_keyboard@10.enter(16, wl_surface@15, array)
[2439163.849]  -> wl_display@1.sync(new id wl_callback@23)
[2439164.207] wl_display@1.delete_id(23)
[2439164.332] wl_callback@23.done(16)
[2439186.533]  -> wl_surface@15.attach(wl_buffer@19, 0, 0)
[2439187.006]  -> wl_surface@15.damage(0, 0, 1030, 801)
[2439187.593]  -> wl_surface@15.commit()
[2439187.797]  -> wl_display@1.sync(new id wl_callback@23)
[2439188.772] wl_display@1.delete_id(23)

On Desktop (Intel GPU, Mesa drivers)
------------------------------------
Hiding window
[2767510,960]  -> wl_surface@16.attach(nil, 0, 0)
[2767510,988]  -> wl_surface@16.commit()
Done hiding window
[2767511,226] wl_surface@16.leave(wl_output@10)
[2767511,270] wl_keyboard@3.leave(25, wl_surface@16)
[2767511,311]  -> wl_display@1.sync(new id wl_callback@24)
[2767511,329] wl_pointer@14.leave(26, wl_surface@16)
[2767511,356]  -> wl_pointer@14.set_cursor(18, wl_surface@15, 5, 0)
[2767511,385]  -> wl_surface@15.attach(wl_buffer@22, 0, 0)
[2767511,411]  -> wl_surface@15.damage(0, 0, 24, 24)
[2767511,442]  -> wl_surface@15.commit()
[2767511,575] wl_display@1.delete_id(24)
[2767511,595] wl_callback@24.done(26)