Spellslinger bug in POE 2

I was so excited to try out Spellslinger with Ember Fusillade, and then turned out it is so buggy.

It would stop and reset for no reason even if i have enough energy to cast 10 more available casts in queue with myself full mana and full health after few auto casts. FYI, I have Ritual Cadence allocated.

It is definitely triggered to be stop by something else, usually after i cast other spells during mapping. Spellslinger got no problem if i just stand there to wait all 25 casts automatically casted in the hideout.

1st test:
I tested in hideout. I have Spellslinger active and cast other spells at same time. It is not bugged in this case.

2nd test:
I tested during mapping. I have Spellslinger active and cast other spells at same time, but involving killing mobs this time. It is bugged and reset after few casts.

TLDR:
Therefore, I believe that Spellslinger would reset (which suppose not to) after I kill mobs with other skills even it has more auto casts remains.

The same happened to me using bone cage with ritual cadence. I wonder if it stops when no enemy are around.
Also, it seems like i can only cast spellslinger after i casted another spell. Often when i try to cast spellslinger, nothing happened until i cast another spell, even if there's charge in my spell slinger. I was excited for that wand but the clunkiness makes it disapointing.

I added a link to this post in https://www.pathofexile.com/forum/view-thread/3860952 to help consolidate bugs with the spellslinger skill.