Forum Discussion
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No words, Microsoft. The cursor is showing on a text, but it is blank.
Like Tom stated, it's your Theme, so switch it and you'll be able to continue with your work.
If you want to try and get Microsoft's attention on the matter as that is clearly a bug, report it via the Feedback Portal at: https://feedbackportal.microsoft.com/feedback/forum/818e3b49-e61b-ec11-b6e7-0022481f8472