When you don't have any application running, opening the application menu or top menu can cause stuttering

[pnguyen9]

Is this a new report?

Yes

Device model

Volla Phone 22 (2022)

OS version

Ubuntu 16.04 2022-08-18/2

Describe the bug

Usually, when I'm inside an application (e.g. settings, terminal) and I open the top menu or the application menu, everything runs smoothly. However, if I'm on the "home page" with no application running at all, if I try to slowly slide open either, it's stuttering a bit (after the 2nd attempt and forth, if not straight away with the first attempt).

Might be a problem with rendering several UI elements simultaneously.

Steps to reproduce the bug

• Close all applications (or reboot the phone then unlock it).
• You should be on the "home page" with nothing but the background and the menu on the left side of the screen.
• Progressively slide your finger from the left side to the right to open the application menu. Close it progressively and try again.
• Progressively slide your finger from the top to the bottom to open the top menu. Close it progressively and try again.
• You should notice the panel isn't opening/closing as smoothly as it should. Now if you try to open either fast, it will freeze for a short moment and then appear.
• Now open any application from the menu (e.g. settings).
• Try opening both menu progressively, one after another. Now it's running smoothly; maybe because there's only one at a time.

Expected behaviour

Both menus should open smoothly even when no application is running.

Additional context

No response

[JamiKettunen]

Can confirm this happening occasionally especially when dragging the top panel indicators under 16.04 (2022-09-30/2)