We just posted this question to Bing support – let’s see what they will respond, but first issue – 100% is coming from padding / margin of parent elements of the map – they just make “off” click area, nothing really to do here from our side.
Second issue was not reproducible: when we change this parameters on our test servers – nothing erase. Please contact us regarding this problem in internal support here https://supsystic.com/contact-us/ – and we will try to check it on your side and make it work as it should.