L2R and R2L overflow issue

[DCH1]

Hi, I have in css overflow auto. With direction set to t2b, it is working perfectly.

However once you switch to l2r or r2l, the overflow stops working and the orgchart stretch outside its container. I used one of yours (@dabeng) example you provided to someone elses issue and the problem is there too (https://codepen.io/DCH1/pen/vYaGRVa).

In my code I used that example for centering the orgchart. Is the centering a problem?