If a button line has too little space for the buttons to be displayed, a menu is displayed instead. This will no longer open.

Test

In the main menu, after the login view, there is the first button component at the bottom right that can be inspected. Reduce the browser window so that the first buttons disappear and the arrow button becomes visible. Test if it is clickable with the mouse. If the test is successful, press the Tab key on the keyboard to check if the arrow button is also executable by keyboard.