I am having a similar issue, although I am using a 7.1.0 nightly release.
Some dashboards - EVERY panel on the dashboard the title shows the “…” after the title regardless of the title length or panel size. But other dashboards on the same installation work as it should (that the “…” should only be shown if the title it too long to fit on the panel and is cut short).
Unexpected value NaN parsing height attribute
Unexpected value NaN parsing y attribute
vendors~app.a543de7f8cae482d290f.js line 2 > eval:1:2609