(bug): 'X' icon when adding hashtags is not functional

Summary

(Summarize the bug encountered concisely)

Steps to reproduce

1. In newsfeed, click on #HASHTAGS drop down and select MORE.
2. Type something in the hashtag text box.
3. Press 'X' next to the input.

Platform information

HUAWEI (HUAWEI ANE-LX1) / Android 8.0.0

Environment: Huawei P20 lite, Android 8, Chrome browser

What is the current bug behavior?

Nothing happens when pressing 'X' icon, which required the user to clear the text box by him/herself if he/she wants to stop adding hashtags.

What is the expected correct behavior?

Input should be cleared.

Relevant logs and/or screenshots

https://dashboard.ubertesters.com/uploads/8463/11810/issues/8/151641/clear%20hashtag.mp4

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)