Loader will not tkae items on input for chests and machines and trains if no belt on back side of the loader- looks not handy
Loader snapping on ouput works good

Please be more specific (pictures, preferrably) and make a bug report on github

Okey i'll make post on github later
But i want to say that the position of input loader is same as input loader - if i зге loader to chest without belt on back side of loader it'll be putted as ouput loader and exit side of loader will look to chest and enter side will be blocked
i had one not handy solution - put belt fisrt and then put loader if i want input loader
Or if i put loader first then without belt on exit side i need to put belt on exit side and then just replace loader in same exact place then all works as i need