Shared event created by another user are always greyed

In my nextcloud instance, I have my personnal calendar, + a shared calendar, shared with another user.

It seems that all events created by this another user are displayed greyed in web interface. For some cases, it is OK as I can easily distinguish events created by me or by another user.

But in the case of a shared calendar, I want to see all events with the same color, because they have the same importance. I would like to be able to configure, per calendar, the display policy of events created by another user.

Is there an existing setting for that? Or should I create an issue?