Captions per-line overlapping

Hello Premiere-Pro community. 

I've been working on a series of short information films which must be captioned, and consistency is of importance. In earlier versions of premiere the captions I worked with was per-line and the boxed semitransparent background behind the text always merged. I like this style since it's easy to read and doesn't cover to much of the picture. There has been a lot of upgrades with the caption tool (I mean it’s finally usable. Thank you Adobe) but I can’t find a way to merge the background boxes.

When I increase the size on the background boxes they start to overlap. I can choose a size that overlap by a pixel. Hardly noticeable but it’s there and the box can’t be bigger because then the overlap is too apparent.

Now, this irritates me to no end because I can’t for the life of me understand why anyone would want overlapping boxes for the caption background AND its inconsistent with the style I used in the earlier films. Is there a way to fix this? I’ve been searching since the update but can’t find any. If not, I would love to have this in a future update.

Best regards, Gustav.