crash481

I made this pull request, both problems above is fixed https://github.com/ChartsOrg/Charts/pull/5163

@gabors oh, also your wish about implement corner radius in absolute values also there. ✌️

@halpro we can only ask developers to do it. Show respect and gratitude to the developers for making it OpenSource or contribute and make it yourself @fortuna Also I vote...

@HosseyNJF did you contributed and have some success on implement it?

update