Hello =)
I made this post in the feedback section on discord and a fellow suggested that it sounded like a bug and I should share it here instead. So...
"The Spirit Master's Summoning spec line comes with all kinds of pet buffs and they're all uninterruptable and can be cast while moving, making it a nice quality of life.
Now, oddly enough, the first pet combat speed buff can't be cast while moving (the rest in the spec line can). This seems weird to the point I suspect it's not intended."
Thank you for your time ^_^


