For the past couple of months (i.e., the last several releases), Safari Tech Preview has almost always failed to complete navigation when opening a new tab or typing a new address into an existing tab; e.g., click on a link in an email, a new tab opens with the correct URL in the navigation bar, but the page never loads. Same when choosing to open a new tab and typing a URL in - no go. If you click "x" to stop and then reload, it USUALLY works. Safari (the non-Tech Preview version) does not exhibit this problem, nor does Chrome or Firefox on the same machine.
Anyone else seeing this or any ideas on how to troubleshoot? I like using Tech Preview, but this is pretty irritating :/