Add panel has an invisible scrollbar, invisible page numbers on IE and has gotten smaller in width on dashboard

[bhavyarm]

Kibana version: 6.5.0 BC6

Browser version: chrome latest and IE11 latest

Original install method (e.g. download page, yum, from source, etc.): from staging

Describe the bug: Add panel on dashboards has an invisible scroll bar now, the page numbers are not fully displayed (invisible on IE11) and has gotten way smaller in width. Also the search box for visualizations looks really small

Screenshots (if relevant):
Chrome 6.5.0:

IE:

6.4.2:

cc @elastic/kibana-qa

[elasticmachine]

Pinging @elastic/kibana-app

[LeeDr]

Still looks bad in IE11 on 6.6.0;

@snide ? Something we can fix for 6.7.0?

[snide]

@LeeDr This looks like a page width issue. I'd recommend the panel use a larger size if the browser width was above 1000px and you saw that kind of break. Likely they are using size="s" and need to use size="m"

[flash1293]

This is fixed by #30508 in >= 7.0 Does is still make sense to backport to 6.7 for the next bugfix release, @LeeDr ?

[LeeDr]

@flash1293 yes, I checked the code change and I think this could go in 6.7 branch for the next patch release. And 6.x too of course.

[flash1293]

Fixed by #35071

[elasticmachine]

Pinging @elastic/eui-design (EUI)