Ubuntu 22.04 LTS no forward button on client after connecting

I installed thinlinc server on ubuntu 22.04 LTS
— System information —
ThinLinc 4.16.0
Linux lgomez 6.5.0-27-generic #28~22.04.1-Ubuntu.

For one of the users of the Ubuntu, when he connects via thinlinc client on Windows, he gets the following issue from any client he tries:
He connects but the forward button is missing, so he cannot connect to his profile.
Other profiles/users work without issues and i cannot replicate the issue with them.

there is no errors in the logs:
Tue May 7 17:54:04 2024
Connections: accepted:
SConnection: Client needs protocol version 3.8
SConnection: Client requests security type VncAuth(2)
VNCSConnST: Replacing existing connection
VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian rgb888

Tue May 7 17:54:08 2024
ComparingUpdateTracker: 0 pixels in / 0 pixels out
ComparingUpdateTracker: (1:-nan ratio)

Tue May 7 17:54:26 2024
VNCSConnST: closing Clean disconnection
EncodeManager: Framebuffer updates: 110
EncodeManager: Tight:
EncodeManager: Solid: 84 rects, 1.45696 Mpixels
EncodeManager: 1.3125 KiB (1:4336.95 ratio)
EncodeManager: Bitmap RLE: 4 rects, 4.334 kpixels
EncodeManager: 150 B (1:115.893 ratio)
EncodeManager: Indexed RLE: 51 rects, 69.904 kpixels
EncodeManager: 11.8896 KiB (1:23.0167 ratio)
EncodeManager: Tight (JPEG):
EncodeManager: Full Colour: 146 rects, 681.965 kpixels
EncodeManager: 532.044 KiB (1:5.01018 ratio)
EncodeManager: Total: 285 rects, 2.21317 Mpixels
EncodeManager: 545.393 KiB (1:15.8574 ratio)
Connections: closed:
ComparingUpdateTracker: 960.768 kpixels in / 209.525 kpixels out
ComparingUpdateTracker: (1:4.58546 ratio)

What advise can you give me in order to find the issue?
If i do a compleate purge and reinstall of the thinlinc server and restart the ubuntu it starts working, but it breaks again after some time.

Best Regards!

Hello @zinovi

Do you have a local graphical session running on the server with that same user? If so, log out any local sessions before trying to log in with ThinLinc.

Kind regards,