Do not update plugins if 'before' status is 502 Bad Gateway
I've noticed that a number of my managed sites have updated plugins recently, and the before/after comparison is just a 502 Bad Gateway page. The updates run because there is no visual difference in these pages, but it's a dangerous situation as it's not actually reporting true success/failure. I raised a ticket about this and was told that a fix is on the way but is 'some time off' - I think stopping the update needs to be treated more urgently than this

Thank you for sharing this with us, Steve. I’ve discussed this with our team and the fix is on the way now. We expect it will be in place (tested and live) within the next few weeks. Should you encounter any other issues related to this, please share your experience here. I’ll keep an eye on this issue until the fix in place and will update when it’s live. Thanks again.
UPDATE ON 7/6/2018: The fix is in place and this issue should be resolved going forward. Thank you for your patience!