2023. No answer from Adobe. Would this be possible to be implemented. Coma is much more useful to copy paste to other programs. No one and nothing recognizes semicolon, so NOT useful at all how Bridge separates keywords. At least Lightroom separated by commas.
Hi @simonbrattphotography I completely agree with you, the semicolon is not generally used as a separator. (Personally I favor the tab key as that frees the comma to be used within the text content, but that's another matter.)
However, the vast majority of folks who look at these forums are not Adobe employees but rather volunteers (such as myself) who try to answer questions. If you want to reach Adobe, please try https://adobebridge.uservoice.com/. That location is viewed by Adobe employees to see what people are asking for.