Name artboard is not added to the file name when exporting (jpg or png, etc.)
When executing the command "File - Export file as" and exporting, for example, to jpg, the name artboard 3 "preview" is not automatically added to the file name. Everything was fine in the previous version (26.3.1) of Illustrator.

This is fixed in 27.1.0 Prerelease build-GM candidate build 2, available in Creative Cloud Desktop Prerelease section.
As part of the fix, we have added suffix checkbox in ExportAs dialog to toggle on/off the functionality.
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Kyrsten B. Chaplin commented
Adobe turned off the ability to export a single artboard with its artboard name because a user complained about how difficult it was to have to go rename their files to remove the "–01". Sadly it was a popular feed apparently and Adobe just deleted the ability in the newest update for it to happen instead of giving us a choice to turn it on or off. I've seen many posts to turn it back on all over the internet, but according to contact - you HAVE to go through these stupid forums in order to make noise for them to listen. In order to turn it back on for those of us designers that 'get' the point of it - we have to go downgrade to the last version of AI. All they had to do was make it an option to turn on or off. Then everyone is happy. How hard is that???
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fernando commented
noticed this too. us OG exporters are starting to get left behind....