Lektor Admin console edit the wrong document when alternatives are used

Using the latest version of Lektor v3.3.0, when using the Admin console to edit a page. The link return by the little pen in the top left corner is not the right URL.

e.g.: When browsing the page http://localhost:5000/en/support/ the edit link is define as http://localhost:5000/admin/edit?path=%2Fen%2Fsupport%2F.

What links is wrong and doesn’t allow proper editing of the page. The appropriate link should be http://localhost:5000/admin/root:support/edit

This is a regression when comparing to lektor v3.2.2.

Here my project file:

[project]
name = IKUS Software inc
name[fr] = Logiciel IKUS inc
url=https://www.ikus-soft.com/
url_style=absolute
excluded_assets=*.less

[alternatives.en]
name = English
name[fr] = English
locale = en_US
url_prefix = /en/

[alternatives.fr]
primary = yes
name = Francais
name[fr] = Francais
url_prefix = /fr/
locale = fr

[packages]
lektor-make
lektor-git-src-publisher
lektor-disqus-comments = 0.2
lektor-pythonmarkdown = 1.2

[ikus060]

Had a deeper look at it worked on 3.1.2. The link for page /fr/support is http://localhost:5000/admin/edit?path=%2Ffr%2Fsupport%2F which get redirected to http://localhost:5000/admin/root:support%2Bfr/edit which allow to edit the page properly. Look like a series of bug making it worked.

[dairiki]

This bug currently exists in the 3.2-maintenance branch as well as master. It affects releases 3.2.0–3.2.3 as well as 3.3.0. The last Lektor release without this bug appears to be 3.1.3.