Bug on Mobile Chat widget

We found two bugs with the built-in Chat on Zoho Desk Enterprise version.
We are testing with Samsung phone using Chrome.
1. When you try to end a chat you click the {+} button and then you click the Power Icon (close Chat). The system then asks for your rating. After you leave a rating the button says [Close Chat Window] . The Close Chat Window button will not close the chat window, it is stuck and you cannot get back to the website. This also happens if you click “Skip” on the Rating screen, you are stuck on the chat window with no way to get back to the website.
2. there is NO minimize or close chat button on the chat window that shows on mobile devices. When you click chat it opens a new browser tab and you cannot get back to the main website without physically closing the tab. This is a huge issue for customers, they dont know how to get back to the website if they want to leave the chat. All other chat products from help desk like Zendesk, Freshdesk, etc have a basic close or minimize feature on chat. please fix.