Wizard Saving Issue

I implemented a wizard for creating a new Quote. One of our Sales managers attempted to create a quote within the wizard (~45min process, which includes creating/saving various child object records). On the second step, a window popped up that said something along the lines that he was logged out of Skuid. He clicked ok, and continued to work as it appeared to be working fine and said it was saving. When he went to look at the Record page, nothing was saved besides the Quote Record Name.

I have tested this wizard multiple times and have never had this issue occur. I wanted to see if anyone else has had this issue before, or if there is a known cause? The manager was working on a Sony Vaio, using Google Chrome.

Thanks!