<!-- If you found a security vulnerability, please send info about it to info@devexpress.com --> <!-- If you submit a bug, please provide the following information --> ### The AJAX Control Toolkit \<VERSION\> Version 20.1 ### The installation method - [ x] Installer - [ ] NuGet package - [ ] A custom build from the source code ### Minimal steps to reproduce the bug Create a VB.net web form and place an AJAX HTML editor extender with a width of 1045px and height of 480px. Copy and paste several lines of text. Drag the cursor from left to right. On the jest side the cursor is an edit icon. On the right iris an arrow. The left can be edited, the right side cannot. ### Actual result See above ### Expected result Both sides should be able to be edited. ### Browser(s) used ### A site deployment method - [ ] VS development web-server, - [x ] IIS <!-- A sample project can greatly reduce the research time. Please attach it if possible. -->this is in VS 2019 Webforms project.