Thanks. I’ll take a look. My bet is that it’s a memory issue and the server is having trouble creating the large in-memory image for the waterfall since it is so long. I’ll see if there are any tweaks I can do to reduce memory use a bit (or if it’s something else). The thumbnails are drawn at thumbnail size (an optimization that was done ~1yr ago) which is probably why they are working.
You might be able to see the parts you care about in the meantime by going to the custom waterfall UI and selecting a subset of the requests.
Ahh, thanks. Yeah, I have no doubt that the massive image causes memory issues on the iPad. I’ll have to think about it a bit to see if it makes sense to split it into smaller images when there are that many requests or falling back to a HTML-based waterfall like HAR Viewer