Interrupted downloads do not continue when wget2 is rerun

I have a situation where downloads that are interrupted by connection failure do not resume upon rerunning wget2.

The connection failure gives errors like this:

Just got 84426498 of 896577966 bytes
Failed to read 102400 bytes (11)
Failed to read -1 bytes (11)

Upon rerun of wget I get the following for the downloads which were interrupted

HTTP response 304 Not Modified ...

The server file hash and the downloaded file hash are different.

Configuration:

random-wait = on
wait = 1
force-directories = on
cut-url-get-vars = on
cut-file-get-vars = on
mirror = on
no-parent = on
https-only = on
https-enforce = hard
max-threads = 4
no-robots = on
continue = on
limit-rate = 500k

# Other useful settings
reject = .htaccess,_index.html
default-page = _index.html