Tabs (modules) exceed the width of the page

[johnjeffersoncm]

When there are many active modules (tabs) in a project, with this theme applied, the width of the page is exceeded: a horizontal scroll bar appears in the browser, which when scrolled to the right, the buttons of the tabs are out of adjustment.
The problem also occurs when the fonts are large (it is possible to simulate increasing them in the browser).

The problem is not caused by any other plugin, as I tested it on a clean install of redmine, and this doesn't happen with other themes.

It didn't come out on print, but there is a horizontal scrollbar that causes this bug when scrolling to the right:

in other themes the horizontal scroll bar is not displayed, preventing this problem from occurring:

[Plinsboorg]

Hello. Do you have additional tabs created by some single plugin for menu customization?
Or is it because you have installed several plugins, and each of them created new entry in the top menu.
It's not clear to me, how to reproduce your issue.

[johnjeffersoncm]

I have many plugins installed and enabled in the project. In the example screenshot, there are 6 additional plugins (in addition to the core plugins that were also enabled).