The new OpenGL renderer does not (yet) include the block select dialog from the default renderer, which makes it very tedious (and sometimes impractical) to select items of a particular type in a given region.
I've heard that there are some who aren't a fan of the block select dialog, so I'm personally okay with it being optional in the settings, or requiring you to hold a modifier key (such as alt or ctrl), but the functionality of the block select with block select dialog is extremely powerful. I don't think losing that functionality would be a good thing, as it would be a step backwards in terms of what can be done with KiCad. Perhaps there is a better way to implement that functionality, but the current workflow works pretty well.
I didn't see any public discussion on this topic, so I figured this bug report would be a good place for discussion.
I vaguely remembered some discussion about this, but wasn't able to find it - anyone who can find the other discussion, feel free to mark duplicate.
In any case, I totally agree with everything here, the ability to limit selection items is *very* powerful. It's probably the last thing I still switch to legacy for.