Keys using AltGr stopped working

Describe the bug

I use r for reload, and / for enterFindMode. I use AltGr + r, to type a /. But on October 17 or 18, pressing AltGr + r started refreshing the page (like plain r), and not going into find mode. To see if it was an issue with Chromium, I checked with the script

  document.addEventListener('keypress', logKey);
  function logKey(e) {
      console.log(e)
  }

And Chromium recognizes my AltGr + r as /.

To Reproduce

Bind enterFindMode to some symbol you type using AltGr. And also bind something to the same key without AltGr. Press the key with AltGr. See if you enter find mode.

Browser and Vimium version

Chromium 86.0.4240.75 (Official Build) Built on Ubuntu , running on LinuxMint 19.1 (64-bit) c69c33933bfc72a159aceb4aeca939eb0087416c-refs/branch-heads/4240@{#1149}

Vimium 1.66

Reproduce the issue in Chromium on Linux with an AltGr key bound to enterFindMode and the same unmodified key bound to reload. Compare the browser's logged keypress data with Vimium's observed command, then verify that AltGr+r triggers find mode rather than reload.