Sometimes the recipe tree has the number behind the resource image making it impossible to see the values

ex:

This is with latest version of EMI (emi_loot-0.7.6+1.20.1+forge), I manually updated the mod just in case it was already fixed

@Nagapito here's solution GregTechCEu/GregTech-Modern#2735

Worked for me.

If those are GregTech items, I believe is in an issue caused by GregTech, that has been discussed here and on the discord previously