Incompatibility with Ubuntu devices

I have a problem for days, there are end users who have the Ubuntu OS installed on their computer when using nextcloud via the web, on certain occasions it does not load the icons at 100% among other things or the folders. I think it is a compatibility issue, any suggestions? ?
They use the Google Chrome browser, and I tried changing browsers and it works but in some it doesn’t. They have the most recent versions of Ubuntu desktop

Now it is also happening to me in Windows environments, that is, the folders are not visible. They are there but several users cannot see them and others can.

When you create a topic, it shows a template to fill out with all important information. Like this, we just know you have Nextcloud installed, but not where, which version, what errors are in the logs, …