Hello. This is a really cool application. My first project, before writing this topic, went fine until I instinctively did a Ctrl-Z to undo the last piece of furniture — zhamm! all the work, which really looked great already, from the last save disappeared.
although, it could affect performance, making auto-save to default to ON would be nice. if it’s on, what’s the time interval?

Then, here’s the 2nd problem. I logged out then re-log-in. When I opened the design, the walls were no longer aligned to the grid. And, I can’t move the whole design one time to snap to grid. I haven’t tried grouping all objects to one group yet, if there’s such an option.