Yes, previously if you used the logoURL?xml to avoid an error where NetSuite was not properly escaping HTML characters this is now broken. But fixable if you just remove the ?xml use.

Many thanks for the reply. After some trial and error it turns out <img src="_${companyInformation.logoURL}" />_ was wrapped in <#escape x as x?html> </#escape>. Not certain how long that's been there ... it might have been used to solve a different issue but all was working up until the 2021.1 upgrade. Referencing just img src (and removing the escape portion) solved the issue ... the logo is back!

@RL That <#escape x as x?html> does the same that ?xml, so it was trying to solve the same issue...

@alien4u Just wanted to thank you for the additional reply and explanation. Much appreciated!