Chrome Version:  71.0.3578.85/ 11151.51.0 Beta channel Kip,Daisy,Reks
OS: Chrome OS

What steps will reproduce the problem?
(1)Sign into user >>Navigate to chrome://settings/manageAccessibility/tts
(2)Click on More Languages button continuously and observe the Dutch drop-down becomes blank sometimes and sometimes appears with delay

Actual: Either the Dutch dropdown text 'Chrome OS Nederlands' appears with delay ore disappears when clicking continuously on More languages button
Expected: No such issue should be seen

This is a Non-Regression issue seen from M69

NOTE: Issue is seen on M70, M72 and M73

Attaching screencast for reference..
 

Deleted: ActualDutchTTS.webm 3.0 MB

	ActualDutchTTS.webm 3.0 MB View Download