Footer Misalignment in PDF Export When Using Emojis

[marianozunino]

Hi @mfontanini,

First off, let me say it again—amazing work on this project! I've been catching up on all the new changes and features, and they’re really impressive.

That said, I’ve encountered a bug that took me some time to diagnose. It seems to affect the PDF export functionality, particularly with footers. When a slide contains an emoji, it causes the footer to shift downward, and in some cases, it ends up on the next slide.

Here’s my environment setup:

OS: Linux
Tmux: tmux 3.5a
Terminal: kitty/wezterm
presenterm-export: 0.2.5

Here’s a minimal reproducible example:

---
options:
  implicit_slide_ends: true
theme:
  override:
    code:
      alignment: left
      background: true
    footer:
      style: template
title: Title
---
slide 1
===
## 🎓 Test

slide 2
===
## 🎓 Test

slide 3
===

test

slide 4
===
test

slide 5
===
test

test.pdf

Let me know if you need any additional details or further testing!

Thanks again for the fantastic work!

[mfontanini]

Thanks for the kind words! I'm able to reproduce it, will have a look.

[mfontanini]

Created Kozea/WeasyPrint#2324 to track this. I've found a few issues similar to this one and always found a way to re-arrange the HTML that gets converted to PDF but I can't find a way around this one.