Ferocious Roar/Walking Calamity into Rampage delayed - Other Rampage issues

When I cast Ferocious Roar or Walking Calamity then press or hold Rampage the rampage never casts unless I press rampage twice. This causes an annoying delay and doesn't count me as standing, causing an even longer cast time of Rampage.

This interaction works when I use Ferocious Roar or Walking Calamity into Furious Slam, this counts as standing.

Other Rampage issues
- Rampage will cancel immediately if I use it and get blocked by mobs.
- There is a Desync when I cast Rampage my char slide around the boss or off center until the rampage starts moving.

I've noticed a bug where after rampaging ends, I go to cast ferocious roar and for some reason rampage starts to channel again.

I also see this issue, but I need to walk around for a few seconds before rampage becomes available. Sometimes, I may need to use a different skill. Seems inconsistent.