With inheritance, wrong pages or templates can be used when they share the same ID / node name in different HST configuration nodes

In my project, I have the following HST configuration structure:

------------------------

common

siteA
+ pages

siteB
+ pages

siteA1 inheritsfrom common,siteA
+ sitemap

siteB1 inheritsfrom common,siteB
+ sitemap

------------------------

When accessing the siteB1 home page, the page and template of siteA are used instead of the ones of siteB.
When renaming the page and template of siteB, it works as expected.

So it seems that the HST configuration is not handled properly - with inheritance - when some HST configuration items share the same ID / node name.