Regions don't get updated while you resize the chart

[Fly06-Fr]

Hi There,
We have recently upgraded c3 from v0.4.11 to v0.7.18 to take advantage of the multilineMax option which does not work with the older version.
Unfortunately, we also noticed a regression regarding regions.
When we display the full size version of the chart every parts of it is resized appropriately except the regions.
Any ideas welcome.

C3 : v0.7.18
D3 : v5
Browser : v77.0.1
OS: Ubuntu 18.04.4 LTS

[dao-phuong]

I meet the same problem

[nbevans]

Same here. Also if toggling data series on/off via clicking on the legend, the regions do not re-scale themselves. From what I can see, regions as a feature are completely broken and unusable. Fortunately there is the "lines" feature instead which works okay.