It's not just multilingual. Routing between components is broken in general. Install Joomla's sample testing data and compare the links for the tags from the homepage "Joomla! Testing" article item versus when you're on the /all-tags page (the "All Tags" item at the bottom of the "All Front End Views" list).

Just tested and: Yes i confirm! I thought it has something to do with multilingual because before implementing the other languages on 3.6 page the routing looked nice...

@mbabker Yes, but it is also a tags specific problem in that case:

TagsHelperRoute::getTagRoute

Defines the id as needle in search for the itemId, language is this way always (hardcoded) to *.

The URL should look like that (no clue why the parent tags list all menu entry is not considered too)

domain.com/aliasTags/tag/tagname would be better then component/.. imo

See this line

The tags helper also doesn't account for the fact that a tag view may have its URL based on a parent tags view's menu item; it only looks for a tag view and that's in part where the inconsistent routing comes from. It is not just a language issue. Although that part could probably be fixed by applying the same logic as used for the com_content route helper.

@designbengel If you require real fast patch you can test #11166.

It problem not multilang. It's problem since the day of tags was added to core.

Same issue here , since Joomla 3.6 tags links return nothing
example here http://www.dpm-images.fr/component/tags/tag/31-aspherique

Is it still up to date? How can I repeat the issue on Joomla RC4?

Ok, I find a way to repeat this issue.

ca we close this as there is a PR @csthomas ?

closed as having PR

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/11163