Second video doesn't play without refresh

Edit: Forgot to edit title. This only occurs on Youtube player.

1. Go to Below Quick Look (or any video).
2. Click play.
3. Click a video from the Carousel (with or without pausing).
4. Click play on the new video.
5. Expected: Video plays
6. Actual: Video area goes black. You need to refresh the page to get the new video to load.

Chrome Version 70.0.3538.110 (Official Build) (64-bit)

Windows 10

Occurs when logged in with and without extensions enabled and when not logged in using Chrome incognito mode (with no extensions).

In both cases, I'm using the youtube player. The GB Player doesn't have this problem.

Looking in Chrome's console, I see this error occur when I click play on the second video using incognito (not logged in):

2970-18650:154 Uncaught TypeError: t(...).richTextEditor is not a function

at Object.success (episode.js?d83093cd9db51cd0036c44ea872331de:6)

at l (jquery.min.js:2)

at Object.fireWith [as resolveWith] (jquery.min.js:2)

at T (jquery.min.js:2)

at XMLHttpRequest.r (jquery.min.js:2)

at XMLHttpRequest.nrWrapper (2970-18650:154)

success @ episode.js?d83093cd9db51cd0036c44ea872331de:6

l @ jquery.min.js:2

fireWith @ jquery.min.js:2

T @ jquery.min.js:2

r @ jquery.min.js:2

nrWrapper @ 2970-18650:154

XMLHttpRequest.send (async)

nrWrapper @ 2970-18650:154

send @ jquery.min.js:2

ajax @ jquery.min.js:2

j @ episode.js?d83093cd9db51cd0036c44ea872331de:6

_ @ episode.js?d83093cd9db51cd0036c44ea872331de:6

(anonymous) @ episode.js?d83093cd9db51cd0036c44ea872331de:6

dispatch @ jquery.min.js:2

u @ jquery.min.js:2

nrWrapper @ 2970-18650:154

all.js?d83093cd9db51cd0036c44ea872331de:33 [MUX] _initializePlugin

Looks like we're calling t(".js-editor-textarea").richTextEditor(); but that function doesn't exist on that object. Or maybe the object doesn't exist? I'm not logged in, so I don't see any textareas on the page.

Maybe that's a red herring because when I'm logged in, I don't get that message.

When logged in, the youtube player still exhibits the same problem, but the console has a different message. When I click play on the second video:

free-video:154 GET https://dpm.demdex.net/id?d_visid_ver=2.3.0&d_fieldgroup=AAM&d_rtbd=json&d_ver=2&d_orgid=10D31225525FF5790A490D4D%40AdobeOrg&d_nsid=0&d_mid=92217691089681668721977577353437135840&d_cid_ic=AVID%012C92635205035CB9-6000118840001321&d_cid_ic=userId%01&d_cid_ic=puuid%01&ts=1545341452402 net::ERR_BLOCKED_BY_CLIENT

I'm using Adblock Plus and Privacy Badger. If I turn both of them off, I no longer get that error but I still get the bug:

I also have had this problem since the site redesign, across Firefox, Chrome, and IE, even with all add-ons disabled. Again, only with the Youtube player. What gives?