No dialog box on tool change?

Trying to configure my tool setter on my DIY CNC running grblHal. For some reason, when I run the M6 command I never see a dialog box. None of the tool probing options change this behavior, I’m using V1.55 and also tried v1.54 to no avail. Using tools between 1-16 with M6 T#. It shows the purple status bar saying tool change but no where to proceed. Any help? Am I missing something? Thanks

What do your tool change settings look like? Depending on them, tool change commands will not trigger a dialog:

I’ve also gone through all the drop down menus and changed settings to no avail

Ah I see, it only triggers the dialog box when the M6 is issued from a .nc file. I’m confused about the workflow, if I wanted to manually touch off to find my Z offset, is there a way I can measure the tool without loading a .nc file? That’s my usual workflow; i.e. load a tool → probe tool length → touch off → all other tools reference the original TLO.