with the following example:
------------------------
@startuml
start
:state1;
partition use_case {
:state1;
repeat
if (condition) then (no)
else (yes)
:some very big text __or__ complex diagram here...;
endif
repeat while(wait for call) -> callback failed
->callback ok;
}
:state2;
end
@enduml
--------------------------
you can see that the partitions box gets on top of the arrow text.
It is not a major issue, but a bit ugly.
Also a sugestion would be to change the position of that text to either the begining of the arrow or the middle segment of it.
Thanks