Material-table export dropdown view broken

Question

I am having trouble with the Material-Table library in a NextJs project. It works fine for the large part except for the export button which displays a very small and empty dropdown with no text visible. The options to 'export as CSV' and 'export as PDF' are still there and still work, and I am able to select the options due to some padding which makes the buttons barely clickable, but no text is displayed. I have encountered a github page where this issue was raised but the solution basically said that this was resolved in a patch (which obviously is not the case here).

package.json versions:

    "@material-ui/core": "^4.12.4",
    "@material-ui/icons": "^4.11.
    "jspdf": "^2.5.1",
    "jspdf-autotable": "^3.5.23",
    "material-table": "^1.63.0",

What I am seeing:

No text is displayed in the dropdown menu

As you can see, both li elements are present in the inspector

What I am expecting to see:

To see a populated dropdown menu as per the documentation..

What my code looks like:

These are my 'options' settings in Material-Table

I have been searching online for a while and have tried numerous different hacks but nothing seems to work, if anybody has an answer to this it would be hugely appreciated.