Lost expanding menu item.

Running win 7, TLB 5.2 64 bit. I have a folder on the TLB with several sub-folders. All of the sub-folders expanded when mouse hovered over them. One of the sub folders lost the action to expand with mouse hover. I have to click on it to get it to expand, then to close it, I have to click on the desktop, when it used to close after one second if the mouse was moved away. The small arrow to the right of the name of this sub-folder disappeared when this happened. It appears that when the menu of this sub-folder appeared, I moved it a little, and it lost the function to expand. How do I get it back?

I figured it out. "Tear off menu" was checked. Now I understand what "Tear off menu" means. I find your program is excellent, and very useful. Some of the functions and descriptions get hard to understand when translated to English.

Actually, I'm having this problem (menu's not expanding when cursor is hovering over them), but Tear Off menu is not checked. If I left-click on one menu to expand it, then all menu's will expand on hover. The next time I use TLB, I have to left-click again. I've been using TLB for years and this has never happened before, although note that this is a new install on a laptop I just purchased.

Standalone TLB v5.3 64-bit
Win 7 Home Premium x64

I guess you have to turn on the option "Popup menu on mouse hover" in TLB Settings->Mouse
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Thanks. Mouse menu. How did I miss that? #-o I guess that's what they call, "set it and forget it"!