Busy is showing a post multiple time on feed and weird behaviour while scrolling on feed and post

[sourovafrin]

Expected behavior

Busy should show the recent post of them whom a person is follwing on the feed. And the scrolling behaviour should be natural as like other website.

Actual behavior

Busy is showing a post multiple time on feed and after scrolling a bit, it start's auto scrolling so quickly which is a weird behaviour. If someone tries to scroll at the time of reading a post, a black page shows up after scrolling down.

How to reproduce

• Log in busy and check out the feed.
• You will see, it's showing a post multiple time. Now scroll down a bit.
• You will find the page auto scrolling down so quickly.
• To check post reading issue, open a post.
• Now try to scroll down. After scrolling a bit you will find the page blank.

Error in console while scrolling in post

bundle-main.0b8428c6afc27bf7308f.js:1 TypeError: Cannot read property 'prefix' of null
J @ bundle-main.0b8428c6afc27bf7308f.js:1
bundle-main.0b8428c6afc27bf7308f.js:1 TypeError: Cannot read property 'nodeType' of undefined
J @ bundle-main.0b8428c6afc27bf7308f.js:1
bundle-vendor.5c3d4fc4222394c5bdfd.js:95 TypeError: Cannot read property 'category' of undefined
    at bundle-main.0b8428c6afc27bf7308f.js:1
    at bundle-vendor.5c3d4fc4222394c5bdfd.js:74
    at bundle-vendor.5c3d4fc4222394c5bdfd.js:54
    at bundle-main.0b8428c6afc27bf7308f.js:1
    at Object.getComments (bundle-vendor.5c3d4fc4222394c5bdfd.js:19)
    at t.value (bundle-main.0b8428c6afc27bf7308f.js:1)
    at updateClassInstance (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at beginWork (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at r (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at i (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
s @ bundle-vendor.5c3d4fc4222394c5bdfd.js:95
bundle-vendor.5c3d4fc4222394c5bdfd.js:95 Uncaught TypeError: Cannot read property 'category' of undefined
    at bundle-main.0b8428c6afc27bf7308f.js:1
    at bundle-vendor.5c3d4fc4222394c5bdfd.js:74
    at bundle-vendor.5c3d4fc4222394c5bdfd.js:54
    at bundle-main.0b8428c6afc27bf7308f.js:1
    at Object.getComments (bundle-vendor.5c3d4fc4222394c5bdfd.js:19)
    at t.value (bundle-main.0b8428c6afc27bf7308f.js:1)
    at updateClassInstance (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at beginWork (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at r (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)
    at i (bundle-vendor.5c3d4fc4222394c5bdfd.js:95)

• Browser: Chrome Version 71.0.3578.98 (Official Build) (64-bit)
• Operating system: Ubuntu 18.06

Recording of the bug:

https://youtu.be/luZShr2uuPQ