[2.0.0-beta5] Preselect option when only one available

Hi guys!
I updated the code to simplify the wording in the "Referenced entities" source.

I made autoselect for a single option in selectors. Unfortunately, I stuck with a bug when we changed the Source from "Referenced entities" to "Data from a field" and back.
This error already exists in the current beta4 as well. I debugged the code a bit and noticed weird behavior with $this->settings

When we choose another Source, $derivableContexts contains actual data but $this->settings includes the old one chosen. I tried to find a solution but failed.

I added screenshots with the error and debug backtrace.
Any suggestions on how to resolve that?

Hello, just found the time to look a little bit.
thank you very much for your detailed info.
we will create a separate issue for that.

"Referenced entities" and "Data from a field" use the same parent source class, and are storing "derivable_context" data at the same place.
When we switch from one source to another, the old data is kept and the selected derivable_context of the old source is injected into the default value of the derivable_context for the new source.

we can fix that, independently from the current issue :)
i just created 🐛 [2.0.0-beta5] Sources bad on derivable contexts should validate the default option Active , i will push a fix soon.

Hi guys!

I made autoselect for a single option in selectors and updated the code to simplify the wording in the "Referenced entities" source.

Please review the MR !260

Hello,
i just rebased your MR and resolved the merge/rebase conflict.
i will do the review soon.
thank you :)

hello,
i had to change some little things in you MR.
and i merged it :)