The creator documentation page for the Bedrock /execute command is outdated and implies that the old syntax is still valid. Although the page has a note with a link to the new syntax at the top, it says nothing about the old syntax no longer working. Thereby, it gives a misleading impression that the old syntax is valid in the current version.

The page link is
https://learn.microsoft.com/en-us/minecraft/creator/commands/commands/execute