Hello @ONLC ,
Click-to-enlarge isn't a function that can be included in emails, it's just something that email programs/apps either offer or don't by default.
Is your request that you want us to make all images always link to the URL we generate from hosting in the library as a default? If someone used the Replace function for an existing image block that was linked to another webpage, would you expect the newly inserted image to overwrite that external link, or would you expect the original link to be maintained?
Additionally, you can definitely have the account library and the email editor open in two separate tabs at the same time, it sounds like your network or device was struggling to keep up with the increased bandwidth requirement to accommodate the constant live updating.
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