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.