I don't know if it is a missing feature or the developers didn't think of it but for the tool "hide menu icons", I have some apps there, like for example a translator app, when you click it, it opens just a popup from the menu bar (no common window) where you can access some functionality for example translate text (like on the fly). When the option is enabled to automatically show and hide the hidden icons and you click on a app which opens the dialog and you go with the cursor onto the dialog then the dialog closes because the menu bar icon of the app is hidden again because you left the menu bar with the cursor. It would be very convenient to not have this behavior but instead in the case you click on a previously hidden icon and a popup appears the whole thing stays open until eg. you do a click elsewhere on the screen which is not on the popup or let the parallels tool automatically recognize that a menu item app opened it's popup and wait for it to close. Some apps like this translator I can't use with your tool. And this popup feature is very frequent nowadays like "NTFS for Mac" has it, VPN tools or your own parallels toolbox is just a menu bar popup.