In my current design, Gallery element in Wix Studio always adds empty space at the bottom of its element frame. Wouldn’t be a huge bother if I could at least center the images vertically. At first thought it was because I had a taller image/video in the gallery but even that slide has the same issue. Other layout options like thumbnails do not have this issue, but when switching from thumbnails back to slideshow, the images disappear and present a 0px height that it does not allow me to change
Is Gallery just being a bit buggy recently? Before this issue I also had an issue with the gallery not appearing in the layer view, I had to unstack it with the other items and then restack in order for it to show up.
Working in
Wix Studio Editor
Hey Beck, that empty space at the bottom of Slideshow layout is almost always the info/caption area still being reserved even when it looks empty. Go into the gallery settings, Layout tab, and check “Show Info” - if it’s on but the fields are blank, turn it off completely rather than just clearing the text, that usually reclaims the space right away.
The 0px collapse when you switch from Thumbnails back to Slideshow sounds like an Editor rendering bug rather than something in your setup. A couple things that tend to force it to redraw: nudge the element’s height by a pixel with the resize handle, or hit undo then redo right after switching layouts. If it still shows 0px after you publish, refresh the live page rather than trusting the preview, the editor canvas doesn’t always reflect the real published layout.
If none of that clears it, worth reporting straight to Wix support with a screen recording, there have been a few gallery layout-switching glitches after recent Studio updates.
Edit: Was able to get past the AI helpbot to Stephany from support who was lovely, I had somehow missed the “info bar size” at the bottom of layout and assumed I had seen everything after unchecking display info. Set that to 0 and now all good! 
I appreciate it! None of that worked so I’m assuming it’s a bug or glitch I’m experiencing. Was hoping it would be simpler since I find the support “Helpmate” AI a bit of a hurdle and wrong most of the time, TBH, but I suppose it’s a necessary hoop to jump through to contact support directly.
Appreciate your insight, thanks!