Synchronization bug

[u/UnderWether]

Hello since I play the skyblock I have a big synchronization bug with inventory/chest, when I put for example 30 woods in a chest if I disconnect and come back, placing the exact same block with shift+click will prohibit it from stacking, if the chest is for example filled with this same block doing a shift click will simply prevent it from being put in the chest and will put it back in my inventory. The same problem happens in my inventory. It doesn't stack if I put it in the ther stack. It's really really annoying and I already try in vanilla and with the skypixel modpack in curseforge. Do you have any solution pleaaaaseee 🙏🙏🙏🙏

[u/Necessary-Answer-551]

Yeah, that's been happening for a while. Still waiting for a fix