Sponsorblock using way too much memory

[dimbata23]

I have one tab opened in Firefox, just YouTube in a private window. I watched videos from a playlist in the evening and when I woke up I noticed > 10GB of memory used by Firefox. I did a memory dump and found over 2000 instances of the following allocations by sponsorblock equating to about 8GB of memory.
Opening a new tab and closing that one YouTube tab fixed the issue for now.

  {
   "process": "webIsolated=https://youtube.com^privateBrowsingId=1 (pid 35980)",
   "path": "explicit/window-objects/top(https:\\\\www.youtube.com\\watch?v=EJGfQ5AgB3g&list=PL0KMhToOzkd5bWk-EHfHRHFay-5G4yKc_&index=80, id=131)/js-zone(0x1a789914800)/strings/string(length=7828987, copies=1, \"<script id=\"sponsorblock-document-script\" version=\"1.1.39\">(()=>{\"use strict\";var e={156:(e,t)=>{Object.defineProperty(t,\"__esModule\",{value:!0}),t.YT_DOMAINS=void 0,t.YT_DOMAINS=[\"m.youtube.com\",\"www.youtube.com\",\"www.youtube-nocookie.com\",\"music.youtube.com\",\"www.youtubekids.com\"]},740:function(e,t,n){var i=this&&this.__awaiter||function(e,t,n,i){return new(n||(n=Promise))((function(o,a){function r(e){try{d(i.next(e))}catch(e){a(e)}}function s(e){try{d(i.throw(e))}catch(e){a(e)}}function d(e){var t;e.done?o(e.value):(t=e.value,t instanceof n?t:new n((function(e){e(t)}))).then(r,s)}d((i=i.apply(e,t||[])).next())}))};Object.defineProperty(t,\"__esModule\",{value:!0}),t.init=void 0;const o=n(841),a=n(584),r=n(156),s=n(59),d=n(544),l=n(779);let u,c=\"\";const v=(0,s.getThumbnailElements)(),m=[\"\\youtubei\\v1\\search\",\"\\youtubei\\v1\\guide\",\"\\youtubei\\v1\\browse\",\"\\youtubei\\v1\\next\",\"\\youtubei\\v1\\player\"],w=[\"videoDetails\",\"videoPrimaryInfoRenderer\",\"videoSecondaryInfoRenderer\",\"currentVideoEndpoint\"],f=e=>{window.postMe\" (truncated))/gc-heap/two-byte",
   "kind": 0,
   "units": 0,
   "amount": 24,
   "description": "TwoByte strings. The characters may be inline or on the malloc heap."
  },
  {
   "process": "webIsolated=https://youtube.com^privateBrowsingId=1 (pid 35980)",
   "path": "explicit/window-objects/top(https:\\\\www.youtube.com\\watch?v=EJGfQ5AgB3g&list=PL0KMhToOzkd5bWk-EHfHRHFay-5G4yKc_&index=80, id=131)/js-zone(0x1a789914800)/strings/string(length=7828987, copies=1, \"<script id=\"sponsorblock-document-script\" version=\"1.1.39\">(()=>{\"use strict\";var e={156:(e,t)=>{Object.defineProperty(t,\"__esModule\",{value:!0}),t.YT_DOMAINS=void 0,t.YT_DOMAINS=[\"m.youtube.com\",\"www.youtube.com\",\"www.youtube-nocookie.com\",\"music.youtube.com\",\"www.youtubekids.com\"]},740:function(e,t,n){var i=this&&this.__awaiter||function(e,t,n,i){return new(n||(n=Promise))((function(o,a){function r(e){try{d(i.next(e))}catch(e){a(e)}}function s(e){try{d(i.throw(e))}catch(e){a(e)}}function d(e){var t;e.done?o(e.value):(t=e.value,t instanceof n?t:new n((function(e){e(t)}))).then(r,s)}d((i=i.apply(e,t||[])).next())}))};Object.defineProperty(t,\"__esModule\",{value:!0}),t.init=void 0;const o=n(841),a=n(584),r=n(156),s=n(59),d=n(544),l=n(779);let u,c=\"\";const v=(0,s.getThumbnailElements)(),m=[\"\\youtubei\\v1\\search\",\"\\youtubei\\v1\\guide\",\"\\youtubei\\v1\\browse\",\"\\youtubei\\v1\\next\",\"\\youtubei\\v1\\player\"],w=[\"videoDetails\",\"videoPrimaryInfoRenderer\",\"videoSecondaryInfoRenderer\",\"currentVideoEndpoint\"],f=e=>{window.postMe\" (truncated))/malloc-heap/two-byte",
   "kind": 1,
   "units": 0,
   "amount": 16777216,
   "description": "Non-inline TwoByte string characters. Sometimes over-allocated to simplify string concatenation."
  },