It's not a bug, but more of an interacción between these two: electric tiles is loading after the assembler, which means the recipes don't exist at the exact moment the assembler creates it's own recipes.
In the older versions, because electric tiles loaded in the "data" stage, it loaded before, allowing the assembler to find the recipes, but now it creates the recipes in the "data-updates" stage, so it cannot find them.
The best solution is to reach the AdvancedAssebler developer and add an opcional dependency for electric tiles. (Just adding it in "info.json" should be enough).
With that, the assembler could load just after electric tiles.
