Unexpected linebreak in heading

[tmistele]

Description

I tried the following code:

#set heading(numbering: "1.")
#set par(justify: true)

= Theory

It produces the following unexpected output (screenshot of the pdf created by typst compile)

This is with version 0.11.1 (I think. typst --version says typst 0.11.0 (4f8bbb01). I compiled myself from git). It seems to have worked with 0.11.0

What is strange is that I cannot reproduce the issue in the typst web app with any version I try. Perhaps I'm doing something wrong.

Reproduction URL

No response

Operating system

Linux

Typst version

• I am using the latest version of Typst

[Enivex]

I can reproduce this. Presumably the cause is a commit not included in the 0.11.1 release.

[MDLC01]

This seems related to #3398.

[tmistele]

Fwiw, git bisect points to 6d0c159 for me
cc @haenoe

[haenoe]

Hey, thanks for tagging me.
I did some basic triaging and it seems to me that the problem is in the laying out that the BlockElem performs.
The weird thing is this commit seems to fix that (in the very simple example provided above).
I will look more into it, any remarks are greatly appreciated :D

[laurmaedje]

It's likely a problem with measurement and floating point. But the relevant code doesn't exist anymore on my layout refactoring branch, so probably not worth it to try and fix it there.

[haenoe]

Yeah that is also what I suspected, thanks for validating :D
Just out of curiosity, what changes with the layout refactoring? Is the branch public? ^^'

[laurmaedje]

It's not yet public, but I'll probably create a first PR soon-ish and describe things there.