Visual Changes in Admin

this also happened in 4.5.1

Here’s a screenshot of the admin area before your plugin is Activated
http://i.imgur.com/HjxnZm2.png

Here’s a screenshot of the admin area after your plugin is Activated
http://i.imgur.com/xf78xlZ.png

Does this happen on your end as well?

https://ww.wp.xz.cn/plugins/woo-customer-insight/