Unable to add multiple tags to asset using comma key

• Type: Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: Master
• Fix Version/s: None
• Component/s: Frontend Infrastructure, Frontend Infrastructure > UI Taglibs
• Labels:
  • QA-AUTOMATION
  • QUARANTINE_TEST
• Fix Priority: 3
• Sprint: S02E10 - Fight Club, S02E11 - The Big Lebowski
• QA Test Name:
  • LocalFile.AssetPublisherShowFullContent#FilterTagsByNameAP
  • LocalFile.DMAutoTagging#NoAutoTagForManuallyTaggedImage
  • LocalFile.DisplayPagesUseCase#ViewDisplayPageWithComplexRichTextFragments
  • LocalFile.DocumentsadministrationUsecase#ViewFileCategoryAndTags
  • LocalFile.Search#ViewMultipleFacetURLs
  • LocalFile.SolrSearch#ViewMultipleFacetURLs
  • LocalFile.TagsUseCase#DisplayTagCloud
  • LocalFile.TagsUseCase#DisplayTagUsageStatistics
  • LocalFile.TagsUseCase#ViewTagCloudIncrease
• QA Test Score: 40

Steps to reproduce:

1. Navigate to Content > Blogs and create or edit a blog
2. Populate the Blog Title and Blog Content fields
3. Expand the Categorization panel
4. Type "first" into the tag input field
5. Hit the comma key, i.e. ","
6. Type "second" into the tag input field
7. Hit the comma key
8. Type "third" into the tag input field
9. Hit the comma key
10. Click Publish

Expected result: The blog is published with all three tags saved

Actual result: The blog fails to publish and following error message appears: "One or more tags contains invalid characters.". Also, all tags except the first are removed from the tags input field.

Note: This happens on other asset edit forms as well including Web Content. Using commas to enter tags should work according to https://lexicondesign.io/docs/patterns/Forms/selector.html
However, an easy workaround is to user the Enter key instead.

Reproduced on:
Tomcat 9.0.10 + MySQL 5.7.25
Portal master Git SHA 19c298f369f37573a64390af386055d11d2638e6