M109 / M190 don't wait as they should

[justM4D]

Subsequent instructions are sent, before M109/M190 are completed, although they should wait.

[elliottpolk]

I haven't been able to reproduce (even in older versions). Not entirely sure how to "troubleshoot" this since you don't exactly have "console" access running from the webstore. Would you be able to download the .zip from the repo and "sideload" into Chrome. See if you are still seeing this?