Following the Winter'25 release update this weekend we've noticed some changes with the email templates we use with the new Lightning Email Editor. We've fixed the templates from our side but it's interesting to see that there are some changes to how the editor is working with the html templates.
- If there's a 'background: #F5F5F5;' or 'background-color: transparent;' inline CSS tag it's replaced with 'background-color: #000000;'
- The <style> tag is stripped but that might have been always the case.
This is not happening with email alerts or apex email sends that use the same templates.
We ended up exporting all the active templates from Prod, and doing a find and replace in excel for "transparent" and replaced it will rgba(255,255,255,0) and then updated them via dataloader. Had to muck around in excel for a while though to clean up some extraneous rows that get inserted with all sorts of junk......I assume that part of the problem has to do with certain control characters being included in the template HTMLvalue field that dataloader/workbench interprets wrong when writing the CSV file.
