sticky table header borders disappearing

[Kingstone485]

Dependencies check up

• I have verified that I use latest version of all @mantine/* packages

What version of @mantine/* packages do you have in package.json?

latest

What package has an issue?

@mantine/core

What framework do you use?

Next.js

In which browsers you can reproduce the issue?

All

Describe the bug

when i use Table component with sticky header, the following issues appear:

1. vertical sticky header borders do not actually exist, most of the time row borders are seen through the gaps, which makes it seem normal, unless different col span is specified on cells.
2. if headers with >1 row span are used, there's no border at all.
   screenshots attached.

If possible, include a link to a codesandbox with a minimal reproduction

No response

Possible fix

No response

Self-service

• I would be willing to implement a fix for this issue

[Kingstone485]

also borders sometimes disappear randomly on different zoom levels

[shreddi]

Also having this issue

[Kingstone485]

what does the ? label mean on this issue?
should i clarify something regarding the bug?

[rtivital]

It means that I do not know how to implement a fix

[Kingstone485]

fix

[Kingstone485]

@rtivital someone has implemented a fix, but the PR is not getting reviewed or completed. are you going to leave it like this?

[Kingstone485]

@rtivital ?