The NVDA doesn't read "Data Science" and "Filters" buttons when user try to mouse hover or click on them

Steps to Reproduce

1. Navigate to https://www.topcoder.com/challenges?
2. Navigate to "Design/Development/Data Science/Filters" button and try to mouse hover or click on them

Expected Result The NVDA should read "Data Science" and "Filters" buttons when user try to mouse hover or click on them

Actual Result The NVDA doesn't read "Data Science" and "Filters" buttons when user try to mouse hover or click on them

Device: Desktop/Labtop Operating System: Windows Browser: Chrome

WCAG Category: 1. Perceivable WCAG Level: A WCAG Success Criterion: 1.2.3 Audio Description or Media Alternative (Prerecorded) Screen Reader Used: Other Accessibility Audit Tool used:

Attachment https://topcodermsft-my.sharepoint.com/personal/pd-topcoder_topcodermsft_onmicrosoft_com/Documents/Forms/All.aspx?cid=b9c070b1%2Dbb96%2D40e1%2Db92f%2D16f47db5d911&FolderCTID=0x0120005C598A51049FC14CBA882E1AEE168F51&id=%2Fpersonal%2Fpd%2Dtopcoder%5Ftopcodermsft%5Fonmicrosoft%5Fcom%2FDocuments%2FMSFT%2DTeams%2DQA%2FJune%202019%2F29%20Jun%2FTest%20Results%2FBug%20Videos%20%26%20Log%20Files%2Fdoremihong%2FTest%20for%20Accessibility%20Challenge%2FBug%5F4

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