Changes in authorization header value length

I am using scope feature of laravel passport and i have 200 permissions.While login it generates more than 8000 length of access_token .The issue is when i try to use those access_token in header parameter(Authorization) the length of that header changes which most of the time generated unauthorized response.My question is why there is change in the header length? Please refer following image.Thank you.

Image 1 first header response

Image 2

Second header response

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