We made some UI improvements in how locales are presented and managed in the tabular visualization of a collection, when you have a model with the option "All locales required?" disabled.

The locale switch dropdown now automatically filters out records that do not contain the selected locale — previously, it would only have the effect of showing content in the table in the selected locale, if it was available:

This change should already improve 99% of use cases, but if you need to make some more complex queries on your record list, you can use the new "Locales" advanced filter: