Text on Slide matrix not clickable for Project Thumbnail slides

[Berki]

Hey there,

I'm using the Lay Theme with a Carousel element that contains Project Thumbnail slides. I noticed that the "Text on Slide" position matrix (the 3×3 grid on the right side of the Edit Carousel dialog) is not clickable for Project Thumbnail slides.

One of my slides already has a text overlay with a working "Add Text" editor (accessible via the blue bubble). However, I cannot add a text overlay to a second Project Thumbnail slide because clicking the matrix has no effect — no position gets selected, and no text bubble appears on the slide.

I tested this in multiple browsers (Safari and Chrome), same result in both.

Steps to reproduce:

1. Add a Carousel element to a page
2. Add two Project Thumbnails via "+ Project Thumbnail"
3. Select the second slide in the Edit Carousel dialog
4. Try clicking any position in the "Text on Slide" matrix on the right

Expected behavior: Clicking a matrix position should add a text overlay to the selected slide.

Actual behavior: Nothing happens. The matrix appears clickable visually but does not respond.

I suspect this may have been introduced in a recent update. The first slide already had a text overlay from before and still works fine.

Thanks!