Sometimes copied Frame makes a child item very large. This also happens when replacing a frame in a stack. The issue is kind of random, but I’ve managed to isolate it within a file so you can reproduce it too. The file is downloadable via iCloud link. Can’t attach it here due to size restrictions.
Please check the video for exact steps how to reproduce the bug.
I’m on macos 26 beta, but it happened to me earlier on non-beta versions.
This can be fixed by setting parent’s frame height to fit, but it still a bug. Sketch Version 2025.1.3 (203472)
Hi @mromanbanks!
Thank you for sending the file; it has helped investigate the case. @Brett and I have been tinkering with it for a while, and we’ve noticed some things:
First of all, you don’t need to copy and paste the frames to trigger the issue, just change this frame’s Width to Fill:
That made us look for the issue in the containers themselves, and made us realise something: the top-level frame of the document you sent is weird, because it has its Height set as Fill. At first glance, it could look normal, but it’s not:
Actually, top-level frames can’t have the Fill option. The default options for top-level frames are these:
We assume the frame you sent is part of a bigger document and was perhaps inside a Group. So we’d like to ask: How did you isolate that frame in the document, and could we have a copy of the bigger document? If privacy is a problem, remember you can send it to productsupport@sketch.com if you prefer.
That would help to locate the issue, which seems related to these frames with unexpected resizing options.
Hey Jorge, thanks for diving deep into the issue. Turned out that the top level frame “fill” is easy to reproduce. You just need to drug out or copy/paste a child from a frame. The child parameters will be preserved.
Hey Roman!
Thanks for your answer. I’ve been testing the issue a bit more and I can’t reproduce the issue from scratch with any new document I start. Let’s assume that the resizing options of the top-level frame don’t seem related to this issue after all.
Could you send the document so we can look at these elements in context? Perhaps there’s something we can discover lby ooking at the big picture.
Remember that you don’t need to send your documents publicly here, you can attach them to an email and send it to productsupport@sketch.com
Does the attached document (below the video) is enough? I’ve created this file on another mac with non-beta macos (15.5 (24F74)), so the bug is persistent for me in two different environments
Sorry Roman, I forgot to specify earlier.
I’m referring to the file containing the Sidebar you sent us in the OP. The context on that document will help us determine what could be happening here.
Ok got it. Shared the file via email 
Hey Roman,
As I just said to you through email, we’ve been able to reproduce this issue consistently and we’re working on a fix.
Not sure how long this could take, though. So, in the meantime, the workaround is to resize the frames affected by this unexpected behaviour manually. Sorry 
Thank you so much for reporting!
Sounds good, thanks Jorge!
