@nicmar Just one quick question: Do you see any warning messages when exporting your problematic problect which causes clipping to create a huge memory leak?

@nicmar this forum is the best place for feature requests since it allows us to have a discussion about potential features before we pull the trigger on implementation.

Internally we've talked about having a checkbox to enable visibility of internal edges and we've agreed that it would be sensible to have, so you can probably expect the feature to show up in one of the next updates.

Hey @nicmar!
No worries, this is not a bug! We changed the mechanics of the box selection to get a faster and better workflow, also, the same mechanics work in the Dopesheet and the Graph.
If you want to have the box selection active to scale the keys, just drag and hold for a second. The border will appear and you will be able to scale the keys. The same action works in the Graph as well.
If you box select your keys fast, the box selection will disappear, but the keys will stay selected, so you can move them around as needed.
Test it out! See how in the Graph you can scale on the X and Y axis which can come in really handy.