These PMTiles don't seem to work well with users behind corporate proxies. The proxy must have to download the entire files before releasing it. Not making a nice user experience. I wonder if there is a way around this?
If not, then probably it can be done by additional proxy that will convert range headers to GET params. But TBH corporate proxy in this context doesn't seem to work properly. For example, all other header-based authentication should be broken if proxy doesn't respect additional headers.