As a temporary workaround for developers, you can change your chrome 'channel' to the developer channel. http://dev.chromium.org/getting-involved/dev-channel
This provides weekly updates of chrome, and it has a spiffy new look. But more importantly, GXT apps using Table are useable again.
Note: as of 7/13/09, the Beta channel does NOT fix the table issue. Only the developer channel does.