Thanks for clarifying. Did a little digging and found this: https://bugzilla.mozilla.org/show_bug.cgi?id=1489785
It's a long ticket and I don't have time to read through the whole thing but summary: it's either a fix in Mozilla (what Komodo is built on) or Mojave. It sounds like there are two issues, both very similar but apparently not exactly the same.
Gotta love those OSX updates! I'll have to have another look tomorrow to see if there is a work around. I got some code i have to finished off over here before 5.