Hi @sp13test ,
Please rollback to v1.11 as version 1.12 release is currently considered as deprecated due the unexpected regressions:
SharePoint Framework v1.12 release notes
Thanks
Best Regards
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.