Macro Library tries to recompile upon PIE when Auto Recompile is turned off and library does not need to be recompiled.
Note The macro library does not have to be used to cause the compilation message to occur. Simply having it present in a project causes the compilation message to appear.
Regression (unknown) issue occurs with a specific macro library created within 4.11, has not been reproducible outside of user's asset.
Editor asks user to recompile macro library. If PIE is stopped then started again after recompiling, the editor will ask to recompile the macro library again.
Macro library does not require recompilation or if recompilation is required it will only require recompilation the first time PIE is pressed.
Head over to the existing Questions & Answers thread and let us know what's up.