The dependent entity reference filter stops working when changing the filter identifier of the dependency, with ajax enabled.
For example:
In a view with the filter exposed "A" and "B". Filter "A" is a normal exposed filter and "B" is an entity reference filter. In this scenario, the filter "B" has "Arguments for the view" as the identifier of the filter "A".
While the filter "A" has its default identifier (string equal to its machine name) this combination works perfectly, but when customizing the identifier it stops working.
From what I could see the ajax controller code doesn't handle the case when the identifier is different from the filter's machine name.
My suggestion is to identify, find the machine name of it and put it in a new variable, then change this in the necessary zones.
Validate the proposed resolution.
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Needs review
2.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Attached patch, no tests. Also moved $base_table_view = $config->get('base_table'); since is only need outside of foreach loop.