Lerris (Tamani Corp, Tavros) uses upto 1 full stack of transformation items when giving them

[Who Cares]

Tried this with Tittyblossom and Bovinium.

Also it seems Tittyblossom can be given without limit but no change after getting Lerris to G-cup

 

[Yuki Anno]

Confirmed this still occurs. Lerris will consume however many of an item you have when you give it to her.

The breast size thing I couldn't confirm as I was able to get her to an H-cup(+).

 

[Franzferdi]

It's May and the bug is still there for Lerris, have a stack of ten Tittyblossom and Lerris uses the whole stack as one use.