Mod description does not mention: it also has a "feature" that it automatically inserts curved conveyors when (the mod's logic thinks) it's appropriate. Which, it's not correct 100% of the time. (And if u are like me and don't like curved conveyors, it's not correct any of the time. :P)

The main issue I have (besides the ugliness of curved belts) is it needs to replace the actual world item (straight conveyor) w/ another world item (curved conveyor); it can't just rotate an item in place. So it despawns the former and inserts the latter. And anything that was on the conveyor falls on the ground. Or goes in your inv. Or gets sucked up by collector, gets lost, etc. Coupled w/ the fact that it doesn't always correctly estimate in the first place, whether it should even be putting a curve there or not, I eventually got fed up w/ it and uninstalled.

There was also another glitch I ran into where, for example, I would be doing some exploration-mining, have a couple hundred bedrock or whatever in my inventory. Then say I needed to build something e.g. stairs or a bridge. So I would MMB on some rock, and LMB to start building. Well, idk if it's some hotkey combo I was subconsciously/sloppily hitting, or just something that happens "at random", or something to do w/ my position in the world relative to where I was trying to build (which was usually right in front of me) but sometimes it would do this sick spawn/despawn loop w/ whatever I was building with, where it would place and destroy the entire inventory worth of whatever I was trying to place, as fast as possible. Along w/ the expected sound effects. (Plus me vocalizing "WTF?!") This happened at least 3-4 times. Luckily never with any important block. I'm not saying MMB had anything to do w/ it, I'm just describing the scenarios in which would happen. Like, was I jumping at the moment I tried to build? Maybe. WASDing around to square myself up to the build position? Maybe. Completely or partially occupying the voxel where the built object was going to go? Probably quite often, yes, but this isn't usually a problem. Accidentally hitting ALT or R (which are special purpose keys for this mod.)? Maybe, but I really don't think so. But it was disturbing and definitely odd behavior. Didn't seem like it was tied to any actual intent. Only ever happened to junk blocks but I don't want to see it eat a stack of hoppers or tubes.

Never even got around to using the mod for the intended purpose, except one time tested a "drag-mode" build. But that wasn't enough for me to keep it installed. In the end, curved belts are just too gross and it had to go.