I just installed CIS 6.3. When I click on a setting that should give a drop-down menu to allow for a different setting I see the outline of the drop-down menu, but it is blank. For example, when attempting to change the sandbox setting from “limited access” to something else, I click on “limited access” and the outline of the menu appears but it is completely blank. The program does this for all the ‘drop-down’ menus I’ve tried.
As always make sure there are no leftovers of security programs you had installed in the past. A possible left over can cause all sort of “strange effects”. Please run clean up tools for all security programs you had in the past. A list can be found here at the Eset website: ESET Knowledgebase