Some Path::lines are invisible on Canvas & line end style not working

[Gibbz]

Is your issue REALLY a bug?

• My issue is indeed a bug!
• I am not crazy! I will not fill out this form just to ask a question or request a feature. Pinky promise.

Is there an existing issue for this?

• I have searched the existing issues.

Is this issue related to iced?

• My hardware is compatible and my graphics drivers are up-to-date.

What happened?

The is an old issue, but its been closed. The issue is still happening for me (and other users in the original bug).
#2281

But i have 2 issues.

1. There are lines not rendering correctly when they are horizontal or vertical. - Ive marked the missing segment in red
2. Line ends cannot be changed from round to flat/none. - You can see when i set transparency the line ends are all round. Ive tried all the settings, nothing changes them

What is the expected behavior?

1. All lines should be rendered.
2. Line ends should be able to be changed with the respected code.

Version

crates.io release

Operating System

Linux

Do you have any log output?

see attached image

[Gibbz]

an update on these 2 issues. I found my system didnt have vulkan installed.
Once vulkan was installed the issues both seem to be resolved.
This must be a software rendering issue in this case?