Hover tooltip window is empty

[EmergReanimator]

No content in the hover tooltip is shown in CDT LSP editor (to the left) when the mouse is placed over foo function call.

The completion works correctly. CDT LSP editor is to the left.

The hover tip is shown correctly with conventional CDT C/C++ editor (to the right).

The issue happens in some (most) identical environments on multiple workstations: same Eclipse and CDT LSP versions.
The content is sent correctly by LSP server. I have checked it in the language server log (not attached to the issue).

Version information

Eclipse 2023-12 (4.30.0)
C/C++ LSP Support 1.1.0.202401111656 org.eclipse.cdt.lsp.feature.feature.group Eclipse CDT
and
C/C++ LSP Support 1.0.0.202309182153 org.eclipse.cdt.lsp.feature.feature.group Eclipse CDT

[EmergReanimator]

It looks like a generic issue not specific to CDT LSP.

Rust corrosion plugin does not work either.

What component is responsible for hover tooltips?

[ghentschke]

I assume you are running Eclipse under Linux? I think this is an Linux rendering problem.

[EmergReanimator]

I assume you are running Eclipse under Linux? I think this is an Linux rendering problem.

Yes, you are right. I am using Cinnamon desktop environment. And it is the troublemaker here.
No such issue occurs in GNOME.

@ghentschke Thank you very much for your prompt response!