[BUG] Tabsbar doesn't have separator between tabs

[AdamXweb]

Describe the problem

In comparison to Safari, the theme doesn't have a separator between each tab. See examples

Version

1.5.4

OS

MacOS 14

Firefox Version

124

Install Options

n/a

Colour Theme

n/a

Additional info

No response

Please tick the boxes

• [X] You are using a current version of the theme. (check the date associated with the version)
• [X] You've checked that this issue hasn't already been raised