I upgraded to 3.9.1 yesterday and since have been unable to edit posts via the Text edit option.
Each time I create a new post the Visual/Text buttons appear briefly above the kitchen sink for half a second before disappearing. Similarly, a number of the icons on the kitchen sink are blank or missing.
I can see that they should be there, as I highlight the area where they would normally be and I can see a small rectangle that isn’t covered by the highlight.
I have no idea about coding, but I use the text editor to insert a concatenate formula from Excel.
I’ve tried the following steps to resolve this issue to no avail:
– Deactivating and reactivating plugins.
– Edited user preferences – checked “Disable the visual editor when writing” and then unchecked again.
– Changed to a different theme and then back again.
– Using a different browser.
Any help you might be able to provide would be much appreciated.