Folder dropdown arrow in bins not functioning

Just updated to V 24.5

In the project window, I can no longer open a bin in list view mode by clicking the dropdown arrow. The only way I can get into a bin is to double-click, which opens the bin in a new pane and now there are 100 panes in my project window. I cannot drag and drop files and bins into other bins, either. Not ideal.

There's also a checkbox now to the left of each folder?