Some fonts not showing in presentation mode in collabora

Hello there,
I’m trying to have my nextcloud install work but it seems that every times I solve one problem, another one appear. So today’s problem is, I added fonts to collabora, I’m able to select them and see them in all “software” of the office suite. When I open the presentation mode some fonts don’t work and switch back to arial. I tried reinstalling collabora and using the integrated code server with no luck

So for example here is a test with the oswald font

As you can see it does not show up :confused:

Any help would be appreciated. I can’t use only office because it has “connectivity issues” because I would have switched to it a long time ago. Collabora is not good at all for working compared to what is available