Impress: slide not changing until mouse moves

When doing a presentation wihtout using an external monitor or proyector slides do not change when pressing the appropiate key unless you move the mouse.

In fact when doing a timed presentation the timer only moves when the mouse moves.

On the other hand having an external screen or proyector makes it work flawlessly.

Any hints? Thanks.

Software and Harware Information:

Version: (x64) / LibreOffice Community
Build ID: f6099ecf3d29644b5008cc8f48f42f4a40986e4c
CPU threads: 8; OS: Windows 10.0 Build 19042; UI render: Skia/Vulkan; VCL: win
Locale: es-ES (es_ES); UI: es-ES
Calc: threaded

Edition Windows 10 Home
Version 20H2
Operating System Build 19042.804
Windows Experience Feature Experience Pack 120.2212.551.0

Asus Zenbook 14 UX425EA-HM165T Intel Core i7-1165G7/16GB/512GB SSD/14"*