Properties panel arrows broken when deployed

I have an issue with properties panel.
When some element is selected and there are to many tabs is in properties panel, arrows used for scrolling are fine locally but when I deploy app there are some wired symbol shown insted?

arrowsScreenshot 2021-10-06 163229

Can you share the application that produces the issue?

Solved, I didn’t add encoding.

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

Now it’s working, I am not sure how it worked locally even without this, but it’s okay now.

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