Hey,
I've noticed that if you enable support for English (United Kingdom), and I suspect other osTicket languages not explicitly provided with an SVG logo, the flag icon is a mess of pixels.

I've worked around the issue by applying a user style to revert to the original osTicket icon, but the size of the icon is different (and my CSS fu isn't good enough to also resize it correctly)
.flag.flag-gb {<br /> background-position: -176px -44px !important;<br /> width: 16px;<br /> height: 11px;<br /> }

I've shown the admin page here, but the login page with language selector enabled also has the same issue.
And the issue appears in both 1.10.5 and 1.11.0
Cheers,
Shaun.
I've since found that the issue goes beyond the flag icon with using a locale other than those directly supported by osTicket Awesome, there are missing tooltip and menu content, so I suspect that there's quite a bit of additional translation required to support languages beyond the 21 directly supported by osTA.

I will be including support for English (United Kingdom) in the next release (osTicket-Awesome-1.11-v1.1), which should be available by the end of April.