As I am typing this message I might have a few letters or even a whole word repeated. So I type:


and I see

"repe repeated"

I've rebooted, removed plugins, changed keyboards wholesale, checked all the accessibility settings that could conceivably be involved and I cannot figure it out. This started happening about a month or so ago. Maybe when I updated to Catalina.

It happens in:

  • Browser (Chrome/Brave) (just happened entering this message)
  • MacOS Mail
  • VS Code

When it happens I think I see something white flash in the bottom left corner of the scree. It happens so fast that I cannot ever move my gaze there fast enough to read what it says or what it means. But there's a connection.

I've deleted all my text shortcuts and other custom keyboard bindings.

Any guesses?

  • Does this happen in certain apps or certain classes of apps? Does it happen in email? More specific information is needed.
    – Natsfan
    Commented Nov 19, 2019 at 2:30
  • I haven’t noticed a pattern. It seems to happen whenever I am doing text entry. I’ve seen it in the browser, in notes, and I am pretty sure in vscode. But I will really try to nail that down.
    – pitosalas
    Commented Nov 19, 2019 at 3:30
  • Is copy/paste mapped to anything nonstandard? I occasionally click the mousepad with my thumbs (I think) when typing on butterfly macs.
    – Fred
    Commented Nov 19, 2019 at 16:09

1 Answer 1


I found the problem. I don't remember the source so help me with the citation if you know it. I uninstalled all Wacom drivers and this solved the problem. Wacom is a pen tablet and I can't imagine what it might have had to do with keyboard input.

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