Publisher - pinning is unpredictable and displays unexpected behaviour

[Maxdanger]

I'm working on a document which has a number of vectors pinned to a text frame. The text frame is part of a master page.

One of the groups I'm using is not working right with the pinning feature. Here you can see I have two groups. The first that I try to pin works as expected, but the second group doesn't work at all. It looks like Publisher is incorrectly interpreting the width of the text frame and the group being pinned. You can also see that the line connecting the pin and group looks off as it doesn't reach the group.

 

This bug appears to be isolated to this single group as the pinning function is working well with the other 20+ groups I've been working with.

Perhaps related to this bug, I experienced a crash when I tried to reapply the master page to see if it would resolve the pinning issue.

Crash report
Affinity Publisher 2 Affinity Store-2025-05-03-162849.ips

Sample doc
Pinning bug.afpub

[Old Bruce]

There is something odd about the fancy group. The line from the pin to the bounding box doesn't quite reach it. The simple group has its line from the pin touch it. I think that is the problem.

Fancy box:

versus:

[Maxdanger]

Yeah there’s definitely something quirky happening with the bounding box of the group

[Maxdanger]

I've done some further testing on this and have isolated the issue to the purple curves in this screen recording:

 

As soon as I delete the troublesome curves, the pinning functions as expected.

There's something odd happening with the curves though – if I select each curve individually, all appears fine (there is no bounding box extending further than you'd expect, or odd rotations or skewing in the transform panel). But when I add the corresponding/mirrored curve to the selection, you can see that suddenly it's interpreted as having been massively skewed and rotated... This bounding box that extends outwards looks to be causing the problem with pinning.

Why the app thinks the curves have been skewed or rotated is beyond me. I drew each line on one half of the diagonal individually, then I duplicated and rotated 90 degrees to complete the drawing. So I suppose 2 bugs:

1. How did the skewing & rotating occur?
2. The resulting bounding box can mess up pinning (and maybe other alignment functions I'm yet to discover).

[Lee D]

@Maxdanger I've logged this with our developers to investigate further as to why those curves are having an effect on pinning. Also thank you to @Old Bruce for his assistance regarding this issue.