On: The UX of UUIDs

[Terr_]

I don't think we're talking about the same problem here.

Regardless of how many dashes you have or how (ir)regularly they are spaced, to select the whole ID you must carefully click-drag-release around its boundaries, you can't just double-click anywhere in it to select.

[dheera → Terr_]

use the character 'v' to separate sections? That would solve that problem, and it isn't a hex character

0000v0000v0000v0000v0000v0000v0000v0000