Blocked Players (Cancelled Substitutions)

[Tactician]

Sometimes this happens I scheduled the sub at 70'. Then I've to go searching the fourth official... The sub never came. Nordeus doesn't want me to have a green

Suppose I intend to do 2 substitutions. I go the the appropriate area during the match, and I drag and place the players. If I click on cancel instead of save, for instance, if I don't want to make two substitutions, this should cancel every unsaved changes made. But, what happens is that those 2 players get blocked and cannot be used as substitutes later during the match.