Are you using Optifine? I seem to recall seeing a similar effect (at least for some Railcraft items listed in JEI), but disabling Optifine removed it, implying that the mod author hasn't taken Optifine compatibility into consideration.
Dunno if it works, i haven't tested it yet, but try update Forge. We had similiar issues for the 1.7.10 versions where i had more of an outdated Forge installed. After updating to a newer version the issue was fixed.
so can anyone help me? i wanted to mess around with some old modded worlds i have, but i can't seem to find the minecart compatibilty layer 4.0 for minecraft 1.0.0, nor can i find railcraft 2.1.1 for minecraft 1.0.0, everything only seems to go as old as minecraft 1.4.7, which doesn't help me in the least
Im missing some of the items, but not like Killaheala in previous posts. I dont see them anything (in JEI, in Inventory in Creative mode). I cannot craft them using recipes - crafting table shows nothing when eements are places correctly.
For example, feed station and Blast Furnace Brick. There are no this items in game.
I have Ic2 and Forestry mods too, but there are no missing items in this mods. I try to remove this mods, create a new blank world with only railcraft and still dont see some items.
Thanks @MauveCloud ! Do you think we can solve it by installing an other mods who have those machines ? if there's one ..
Probably, at least as substitutes until CJ implements the machines in Railcraft. Progressive Automation might be a decent substitute for the feed station, or you could try Easy Breeding. iirc, the current 1.10.2 build of Railcraft allows furnacing iron nuggets to steel nuggets, so the blast furnace isn't strictly necessary. If you really want a multiblock for it, I imagine Immersive Engineering might have one (I haven't tried that mod myself, though).
If 1.7.10 is still supported, I just found a bug/crash: https://pastebin.com/j0uSSdzN I was right clicking a coke oven with minecraft shears and it moved around my inventory and copied my shears, after trying to move stuff in my inventory it crashed, also the GUI never opened for the coke oven and upon restarting of my modpack and reopening that world I have found I have now lost my shears.