Thank you for the demo song and hilarious commentary track… If only all demonstrations were that fun :]
Your 3.0 song obviously cannot be loaded into 2.8.2 any more, so I spent a few moments recreating the instrument and pattern in question, as best I could using 2.8.2 tech:
Note: I’ve trimmed and looped the sample just to save some upload space, and I’m also missing some of the plugins you’ve used, but the important stuff is still there and plays back just fine for the purposes of this demo.
As you can hear, the note with glide does not have its envelope retriggered, and therefore remains silent since it has already completely faded out.
In this particular example, I think the F-4 0G10 could be replaced by E-4 0U10 to achieve the same overall result? Worth a shot, at least. I’ve included this as the second pattern in my demo, so you can check out how it sounds.
Digging a bit deeper… I tested your demo song in Renoise 3.0 b1, b2, b3, b4, b5, b6, b7 and b8 (whew!)
b1 through b5 all exhibit the same (correct) glide behaviour as Renoise 2.8.2 — ie. they do not retrigger the envelopes.
b6, however, does indeed (incorrectly) retrigger the envelope during the glide, as you have obviously found to be the case when working on your song recently.
b7 and b8 both revert to the old (correct) glide behaviour of not retriggering the envelopes.
The retrigger bug crept into b6, and was then fixed in b7, as you can see in this report:
Instrument envelope weirdness with GFF