Photoshop 23.2.1, Windows 10, german keyboard, german keyboard setting
Bug: for the german version of Photoshop, the default shortcut for hiding/showing guides was for a long time and still is Ctrl+, (control and comma). When using this combination on a german Windows, with a german keyboard in german setting, the shortcut hides/shows the currently selected layer instead.
This is due to the menu action "Hide layers" has the same shortcut (I didn't change anything here). Unfortunately, the "Hide layers" action has priority.
Solution for me: deleting the shortcut for hiding the layer.
Solution for Adobe: avoid using the same shortcut twice.