I posted a message reporting a BUG or an inconsistency. After a long trolling from the fan club, the administrator closed the post.
The problem remains: the explanation in the book below is false: with "MONO Mod" the reverb works in the first position. It cost me a lot of research time to figure out why some effects don't always work. It is inconsistent.
Of course it is frowned upon to criticize the Rig Manager but after all I paid for this technology.
There is no consistent explanation given by the fan club for the fact that effects are only canceled on certain positions in Mono Mod mode. It is therefore a bug to correct.
Regards ans happy New Year 2021 with a beter interface !