Reference method of reference field switches to first available in list if previously set to default

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

I tried this on a version of D11 dev with 2.0.8 of ECA (I enabled its Content/Core/UI/Views submodules) and I don't see the same issue. In one of the other posts you said it was due to Taxonomy Manager, is that still the case?

Can you start from a blank slate and give a text description of the steps to reproduce this?

Have you tried with other browsers and disabling any extensions in those browsers?