The last group is taller than the others

[pihug12]

Copy of: almende/vis#3347

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The last group is taller than the others.

It also can be seen on this demo : https://yotamberk.github.io/timeline-plus/examples/groups/groupsEditable.html
The height of each group is 41px except the last one which is 56px.

Browser: Firefox 63

[Kaliph]

I feel something with the group class changed. I had set the height of each group to a hardcoded value. But the exact same css doesn’t seem to work with timeline-plus. It was something like ‚.vis-label .vis-inner‘