The error is thrown in MS Edge infinitely, which prevents the browser from responding to user actions.
ASPxHtmlEditor - "Unable to get property 'tagName' of undefined or null reference" error occurs in MS Edge when the control is placed inside ASPxPopupControl
Answers approved by DevExpress Support
We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.
Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.
- v15.2.4Download Official Update
- v15.1.9Download Official Update