Random Google Chrome freezing

I'm not sure if this extension is the reason. But after removing the hackmd-it, there was no random freezing on my chrome.

Google Chrome Version (`chrome://version`)

Google Chrome | 88.0.4324.150 (Official Build) (64-bit)
-- | --
Revision | e6c2a846b660e61f059daee2c46217af42913240-refs/branch-heads/4324@{#2103}
OS | Linux
JavaScript | V8 8.8.278.15

And My PC is

```
$ neofetch --stdout
mike@mike-pc
------------
OS: Manjaro Linux x86_64
Host: 20KHCTO1WW ThinkPad X1 Carbon 6th
Kernel: 5.10.15-1-MANJARO
Uptime: 1 hour, 37 mins
Packages: 1733 (pacman)
Shell: zsh 5.8
Resolution: 1920x1080, 2560x1080
DE: GNOME 3.38.3
WM: Mutter
WM Theme: Matcha-dark-sea
Theme: Matcha-azul [GTK2/3]
Icons: Papirus-Dark-Maia [GTK2/3]
Terminal: konsole
Terminal Font: Hack Nerd Font 10
CPU: Intel i5-8350U (8) @ 3.600GHz
GPU: Intel UHD Graphics 620
Memory: 4151MiB / 15761MiB
```

No source file, entry point, or test is named. Start by reproducing the freeze in Google Chrome 88 on Linux and compare behavior with hackmd-it removed; done means identifying a reproducible extension-related freeze and a confirming test or trace.

Vom Indexierungsmodell aus dem Issue-Text verfasst.