Cannot open browser console during long text translation process

[acornestean]

[Affected versions]:
Firefox Nightly (94.0a1/20210920212918)

[Affected Platforms]:
Windows 10 x64

[Prerequisites]:
Access https://mozilla.github.io/translate/.

[Steps to reproduce]:

1. Translate any long text using any available language combination. For example, use the https://en.wikipedia.org/wiki/COVID-19 article for sample text. I copied around 15 pages of text as seen in a text editor software such as Microsoft Word/LibreOffice Writer with a font size of 12.
2. During the translation process attempt to open the browser console (CTRl+SHIFT+J)
3. Notice the console is brought up but is empty/blank
4. Close the console window
5. Open the console again
6. Observe that the console window does not show up
   NOTE: Restarting the browser will bring up the browser console immediately upon restart.

[Expected]:
I should be able to use all browser functions while translations are in progress.

[Actual]:
The browser console comes up blank the first time and afterwards it’s not displayed at all.

It might be a performance issue since the 15 pages of text it tries to translate take up to 1 minute and a half to finish. However, strangely enough, I did not notice any significant spikes in RAM or CPU usage.