I noticed this problem in alsoAutoCAD Architecture 2018. Note even theupdateshave fixed this. Steps to solve this were foundhere. (Note that Steps 2-4 are not necessary for 2015 and newer, though you may just want to check that the alias is there.) 1. Open the Customize User Interface ...
By default, plug-ins are automatically registered with AutoCAD and when a new plug-in is installed during the current session. The load behavior for plug-ins is controlled with the APPAUTOLOAD system variable. When APPAUTOLOAD is set to 0, no plug-ins are loaded unless the APPAUTOLOADER comm...
refer to the vendor of that software). In some cases, disabling the anti-virus application from the system tray may not be sufficient and it may be necessary to use the task manager to
Tawfik mentioned in a comment also another solution. Start a command that shows the palette in question, hold down Alt and press Space, then press M and finally use the arrows to move the palette. See alsoClear sticky Sheet Sets from Recent Documents List in AutoCADandPalette Auto-hide Speed...