geido opened a new issue, #32049: URL: https://github.com/apache/superset/issues/32049
### Bug description ## Description When you have an existing Handlebar chart with personalized HTML and CSS code, if you update the dataset that powers the chart, all the previous HTML and CSS get removed. ## How to reproduce the bug 1. Create a virtual dataset with something simple like `select * from YourTable` 2. Create a handlebar chart with that dataset and add some HTML and CSS code in the customize section 3. From the Chart section, click on the 3 dots on the left and “edit dataset” 4. Change the query by adding a where clause or any other change you want. 5. Save the dataset and click on “Update Chart” ## Expected results Your dataset gets updated and you have the same previous HTML and CSS applied to your handlebars chart ## Actual results Your dataset gets updated but all the previous HTML and CSS code you had gets lost. It also seems that the textarea "blinks" going back and forth between states. ### Screenshots/recordings  ### Superset version master / latest-dev ### Python version 3.9 ### Node version 18 or greater ### Browser Chrome ### Additional context _No response_ ### Checklist - [x] I have searched Superset docs and Slack and didn't find a solution to my problem. - [x] I have searched the GitHub issue tracker and didn't find a similar bug report. - [ ] I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@superset.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: notifications-unsubscr...@superset.apache.org For additional commands, e-mail: notifications-h...@superset.apache.org
