There is/was a context menu UI bug that affects some users. First you might try control-click on the menu item.
Also look at Settings / Interface / Enable context menu focus compatibility mode. Of course, your problem may be something entirely different.

i use POP Nvidia version, have no issues like what you describe, but I installed Steam from the web page. Not terminal, pop shop, or flat pak because back over a year ago when I upgraded my NVMe using the terminal install it did cause issues with my 2nd drive (steam library location) where as the drive kept un-mounting.
I've also read the POP shop isn't up to date but I don't know what the problem is there since Steam updates all the time??? I just did the Steam for Linux direct off the site and everything works great.

I see two workarounds that might work in this GitHub issue:
https://github.com/ValveSoftware/steam-for-linux/issues/10453

Originally posted by dpantel:

Same issue here

Steam: 1709846872
Linux Mint 21.1

@cartier If you go to Steam > Settings > Storage, you can uninstall there.

Originally posted by usr0x01ff:

The same for Ubuntu 22.04.4, rightclick->manage->uninstall, etc.. does nothing.

And this is with "Enable context menu focus compatibility mode" enabled in settings->interface.
Which (only) fixes the rightclick->properties dialog.

As workaround I enter "big picture mode", in which manage->uninstall does work correctly.

As for UI bugs, Valve loves life so much they let these little critters spread all over Steam. I had one that just appeared all of the sudden a few days back: when I right clicked on a game and clicked the context menu, it didn't actually click on the menu, but on what's behind it. The first time I thought its my brain playing tricks on me.

One thing you can always try is to force update Steam and hope that would clean some weird cache that wasn't cleaned up properly at update.

Also, you can close Steam and, from the Steam directory (~/.steam/steam or ~/.local/share/Steam) search for every directory that contains "cache" in its name and delete it. Start Steam again and it should freshly download all the cached elements.

You don't install steam from the linux distribution store on your desktop as a flatpak or snap, you don't download it from the website.

You install it using apt and then you have no problems (you can also use a graphical frontend on apt, but make sure it's apt).