Sanmer from OSH discord has reported that when you "do the refill" with Signal, it doesn't give you any HP or SP, unlike with other enemies. I've investigated this and can confirm it is an existing issue.
Consequences
Signal can't be used to refill HP and SP.
Steps to recreate
Go to Lood City
Make Signal horny
"do the refill"
Check the stats
Result expected: HP and SP slightly recovered
Result achieved: HP and SP are the same as before
Oh So Hero! v. 0.16.200
Summary
Sanmer from OSH discord has reported that when you "do the refill" with Signal, it doesn't give you any HP or SP, unlike with other enemies. I've investigated this and can confirm it is an existing issue.
Consequences
Signal can't be used to refill HP and SP.
Steps to recreate
Result expected: HP and SP slightly recovered Result achieved: HP and SP are the same as before
Examples
Here
Configuration and system information
Not provided by original reporter