Autocomplete not working (MacOs)

[lschwetlick]

Application or Package Used
using nteract desktop version 0.28.0 on MacOs 11.6 Big Sur

Describe the bug
I have been using nteract for a long time and only just realised there is actually autocomplete. Unfortunately I cannot get it to work at all. If I press Ctrl+space nothing happens. The tool tip support on Ctrl+. does work.

It works neither in the Python nor in the R Kernels that I have tried.

I have checked that no other keyboard shortcuts are intercepting the signal.

Is this just me? Is there anything else I can check to see why its not working?

If I look at the cell in developer mode I find

<textarea autocomplete="off" class="sc-fzqzEs eVQcHf" style="display: none;">data.fra</textarea>

simply setting it to "on" doesn't help either, unfortunately...