Wrong invalidated discount when combining with promotion

Description

Steps to reproduce

1. Create a new discount: "Buy Puma shoes, get 50% off".
2. Check out an order that includes 1 pair of Puma shoes.
   --> See that both promotions are applied ("Buy Puma shoes get 50% off" is applied after "20% off Mens Shoes").
3. Complete the above order.
4. Create a return for above order (1 pair of Puma shoes).

Expected:
Invalidated discount is correct for both promotions.

Actual:
Invalidated discount of promotion "Buy Puma shoes get 50% off" is equal to the total invalidated discount of 2 promotions. And Return Total is wrong too.

*NOTE: In Release 11.8.3, the Invalidated Discount is wrong (as described above), but the Return Total still correct.