You don't need tampermonkey in canary. You only need a userscript plugin if you're using chrome stable or dev channels. Chrome supports userscripts out of the box, but stable and dev channels only allow store extensions to be installed.
Use a version from github. I'm using this one, as it's got some stuff the 'official' version doesn't (at least, the 2-months ago last change indicates it might be)
The reason they keep breaking is because
Comment has been collapsed.
375 Comments - Last post 5 hours ago by AnonymousBroccoli
289 Comments - Last post 5 hours ago by Velandur
47,194 Comments - Last post 7 hours ago by Mhol1071
49 Comments - Last post 8 hours ago by OneManArmyStar
187 Comments - Last post 9 hours ago by JTC3
19 Comments - Last post 10 hours ago by FranEldense
49 Comments - Last post 13 hours ago by RileyHisbert
39 Comments - Last post 4 seconds ago by Ingrid88
9,682 Comments - Last post 1 minute ago by CurryKingWurst
135 Comments - Last post 1 minute ago by bolcheviqueopl
73 Comments - Last post 11 minutes ago by okamiking
612 Comments - Last post 11 minutes ago by okamiking
17,016 Comments - Last post 32 minutes ago by Riszu
914 Comments - Last post 34 minutes ago by Lakraj1209
Or it could just be funky in Google Canary (Chrome x64).
Yes Tampermonkey is installed.
Using SG + for Tampermonkey script.
Comment has been collapsed.