double underscore in user ID break user page edit link

Observed in XWiki 13.10.5 (Docker) with OpenID Connect Authenticator (Azure AD as provider)

When using OpenID Connect the user IDs are created by the provider as pseudo-random values.

For one of our users an account with the ID

5260mhINVdNTNe5sfGC_8nUUdyh_4zmknO2k3__teFY

was created.

So his profile is available at

https://wiki.example.com/bin/view/XWiki/5260mhINVdNTNe5sfGC_8nUUdyh_4zmknO2k3__teFY

But those double underscores "__" are breaking the "edit profile" link (pen icon).
The icon links to

https://wiki.example.com/bin/edit/XWiki/5260mhINVdNTNe5sfGC_8nUUdyh_4zmknO2k3

(note the missing part beginning with the two underscores)
while the rest of the ID is displayed as link text

teFY?editor=inline&category=profile">

in a narrow column below the pen icon.

See screenshot.