I set up a drawer to accept only logs from a bonsai pot, and then locked it. Left it processing overnight and when I came back all the logs had been processed but the drawer did not keep memory of what was there so any new logs that would have been produces never made it into the drawer. I repeated the process with different 2X2 drawers and pots with the same results. EDIT: Forgot to mention this happens with all kind of drawers. Here is an example of the single drawers

I was just coming to find out about this. This has been happening to me as well. It seems if the drawer is emptied maybe, and it ignores the lock? I've tried to place something new into one of these 'bugged' drawers, it acts like it goes in but then i find it back in my inventory. Unlocking it turns it back into a normal drawer (so you can add more things to it...)

I'm using this from the Valhelsia 2 modpack for 1.15.2

happened to me too, drawer and compacting drawer lost its locked item.
seems to happen upon re-log and only if there is a count of 0?

Have the same issue StorageDrawers-1.16.1-8.0.0

If QTY reaches 0 and you leave the area the item image will disappear, but machines can insert the item into the drawer.

If you save then re-log the item info will be gone for good and have to manually add the item once more in the drawer.

For example due to lack of mods in 1.16 i have 4 tree farms outputting into 1 drawer storage system and 4 pipes directly extracting the saplings back into the planting system rather than rerouting them before they are stored

Until my planting system is full my drawers will stay on quantity and even if they are locked they appear empty and from time to time i have to manually put saplings inside of them because the drawers loose the sapling info and the saplings clog my harvesting system.

I have this same problem with v7.0.2 for MC 1.15.2

This is a duplicate of issue #810 (and #833 )

My version of this problem is that it loses it's memory of what was in it when the drawer is empty and I close and reload the game. Other drawers with items still remember what is there. In something like a 2x2, only the empty one disappears.