I've been testing with PotionCore-1.9, and a handful of mods which apply block mining/reach attribute based range increases, including corail tombstone (reach scroll), random things (spectre tools), cyclic (block reach enchant) and potion core itself (reach potion).

I only knew of the feature when someone told me it was meant to be a thing, cause I hadn't known of it cause in my main modpack, timeless technician it's already broken. But in my test world in a side profile that I use for testing stuff and troubleshooting bugs quicker with the mentioned things and some other basics, once random tweaks is introduced the range increase I should get thanks to the attribute fix in potion core is broken and my attack range reverts to standard attack ranges despite being able to reach blocks and mobs originally at over 19 blocks far.

as soon as random tweaks came back out, my reach was back to working. So, I'm sorry but I'm pointing the finger and asking if you can figure out what it is that you're tweaking that could be causing an issue here? It's a cool feature I would quite like to continue existing.

With just RandomTweaks and Potion Core, the Reach effect works perfectly for me.

This is most likely a compatibility issue with another mod.

you just showed me reach effect MINING. that's a picture of you aiming and mining. it's the reach effect for COMBAT, for hitting a mob, that you're negating.

Tmtravlr told me it was something potentially to do with overriding or making your own right/left click events or something. I was to suspect cause of your changes that change your base melee attack rate and setting your hardcoded default reach which is overriding her changes.

With reach engaged you should be able to punch mobs from further away also with potion core installed. but with both this and totemic installed the reach affecting melee range fix is broken.

It was the night vision tweaks. RandomTweaks was replacing Potion Core's EntityRenderer with its own. They're now disabled when Potion Core is installed. :)

Thank you for looking into it. Thats one down then. :) I'll test it next time it's uploaded.

now I just gotta pray that totemic will eventually reply. T_T

OMG! IT WORKS WITH THE NIGHT VISION TURNED OFF. I need to report this to tmtravlr and ask whats the link to her reach and night vision then. cause I would have never guessed that was the issue until you fixed yours with it. holy crap. THANK YOU.