Syncing stuck in an infinite ajax loop at 99%

Hi,
I am using v.2.1.4 with sync settings set to manual posts. Whenever I try to sync the data it either goes to 100% or 99% but instead of finishing it gets stuck there. The timer keeps on running but it never finishes.

When I check the inspect element and go to networks tab I can see a new ajax request getting generated after every 2 seconds. The request has these headers:

HTTP/2.0 200 OK
server: nginx/1.17.5
date: Sun, 15 Dec 2019 12:53:37 GMT
content-type: application/json; charset=UTF-8
x-robots-tag: noindex
link: <https://hidden/wp-json/>; rel="https://api.w.org/"
x-content-type-options: nosniff
access-control-expose-headers: X-WP-Total, X-WP-TotalPages
access-control-allow-headers: Authorization, Content-Type
expires: Wed, 11 Jan 1984 05:00:00 GMT
cache-control: no-cache, must-revalidate, max-age=0
x-wp-nonce: hidden
allow: GET
content-encoding: gzip
vary: Accept-Encoding
x-proxy-cache: DISABLED
X-Firefox-Spdy: h2

And the response for each and every request is :

{"JSON":{"is_syncing":true,"syncing_totals":{"shop":1,"smart_collections":0,"custom_collections":58,"products":54888,"collects":304},

"syncing_current_amounts":{"shop":1,"smart_collections":0,"custom_collections":58,"products":54592,"collects":304},"has_fatal_errors":false},"Response payload":{"EDITOR_CONFIG":{"text":"{\"is_syncing\":true,\"syncing_totals\":{\"shop\":1,\"smart_collections\":0,\"custom_collections\":58,\"products\":54888,\"collects\":304},\"syncing_current_amounts\":{\"shop\":1,\"smart_collections\":0,\"custom_collections\":58,\"products\":54592,\"collects\":304},\"has_fatal_errors\":false}","mode":"application/json"}}}

I have no idea why it says Products 54592. Each and every request has same headers and same responses. See screenshot:

https://photos.app.goo.gl/izs724cFJ81pVxEY7

Can you please
A. Guide me what could be the issue and how i can make it finish.
B. Can this be the reason for webhooks not working. (See my other thread that I just created)