Incorrect link behaviour with draw.io

[Maxence SEYMAT _contractor_]

I have a draw.io diagram on my page with links in it to anchors on the page (headings).

The URL of my Confluence page contains + characters like this:
/confluence/display/myspace/My+own+page

I therefore expect links in draw.io diagram to be like:
/confluence/display/myspace/My+own+page#Myownpage-Myanchor

However, they are like:
/confluence/display/myspace/My%2Bown%2Bpage#{pageTitle}-Myanchor
and clicking on them makes the page reload, and only after reloading they forward to the anchor, but with this kind of URL:
/confluence/display/myspace/My%2Bown%2Bpage#Myownpage-Myanchor

I don't know how much the + to %2B conversion affects the behaviour of the links, but I think there's a bug as it makes me click twice on a link to reach my destination. Is there a way to solve this? Note, this only affects pages whose names contain spaces.

Confluence version is 7.13.12 and draw.io version is 11.1.2

[David Benson _draw_io_]

What are the confluence and drawio versions?

[Maxence SEYMAT _contractor_]

I added them to the original post.