WowAce

What version of Grid2 and game type (classic or retail) are you using ?

 9.0.2

What game client version (windows or mac) and language are you using ?

 Windows

What steps will reproduce the problem?

  Simply try to cast a mouseover macro on top of grid... (Edit: seems like this is an issue with mouse buttons only, because blizz makes it hard to use those... but some of us are used to heal with the mouse buttons...)
Did you try having Grid2 as the only enabled addon and everything else disabled?

  yeah

Was it working in a previous version? If yes, which was the last good one?

  No

Do you have an error log of what happened? If you don't see any errors, make sure that error reporting is enabled (`/console scriptErrors 1`) or install [BugSack](https://mods.curse.com/addons/wow/BugSack).

Please provide any additional information below.

 People will say simply use Clique to bind that spell, Yeah, but I want to cast a macro that will use 2 spells and a trinket and this is not possible with clique, why can I not simply cast a mouseover macro on the unit frames?