Chrome Version: 71
OS: Linux

What steps will reproduce the problem?
(1) Open https://chromeperf.appspot.com/group_report?rev=597469
(2) Click the checkbox on the top to open all graphs
(3) Scroll to the bottom
(4) Wait for end of all dynamic loadings
(5) Click on the "i" icon in the graph nearest to the top of the viewport

What is the expected result?
The contents in the second popup should be complete

What happens instead?
Only part of the contents (e.g. only "Alert information") displayed in the second popup.