I seem to have access to a new feature that let’s me build a filter based on an exact linked record object. But the way I get access to it seems to be a bug.
If I try to build a filter by chosing a linked record field, I only have the options of [‘contains’, ‘does not contain’, ‘is empty’, ‘is not empty’]. However if I start my filter on a different field type, such as a formula or text field, I can chose the filter option ‘is’. Once I have selected ‘is’, if I then change my filtered field back to a linked record, I have a new option to filter my linked records with ‘is exactly’, and I am presented with a standard lookup list to choose from. Unless I have missed something, this is a huge new feature that I can put to good use. I have added some screenshots, let me know if others have the same thing.