Nested While in If/Else jumps to wrong address

[PeterTillema]

If <condition>
    <small code: < 128 bytes>
Else
    While <condition>
        <large code: > 127 bytes>
    End
End

Result: the While <condition> injects a JP to its End, but the If <condition> uses a JR to its Else part, causing to move the entire While code 2 bytes up, which clearly makes the JP invalid.

Thanks @TheLastMillennial for finding the bug!

[TheLastMillennial]

I'd like to add that this did not apply just to While loops but to anything that was within the Else. The only solution is to remove the Else.