Example: If I have "Foo Bar" and "Foo Bar Inc." as two separate tags, selecting "Foo Bar" will also select "Foo Bar Inc." once "Save" is clicked on a resource. This is based on the "Name" field of the tag.
My temporary workaround is to add a zero-width space to make them distinct (for example, making "Foo Bar Inc." into "Foo <0 width space>Bar Inc., but this is a bug.