Some of my characters are blacked out.

I’m using Windows 10.
Libra Writer 6.2.7.1

In my text document, all letter of a certain type (eg, capital “F”) are blacked out. Presumably I accidentally pressed a series of keys that inserted some formatting. I’ve tried high-lighting the letter and using “Ctrl M”. No success.

Any ideas as to what this could be? Thanks

No idea what causes your problem, but have you tried simply deleting each of the affected words and then retyping them?

Yes, I’ve tried that. They are still blacked out. It’s like that particular location has some sort of formatting. If I type a different character, then the formatting doesn’t appear and I can see that new character

So, a particular letter in a particular location gets blacked out.

But, a different letter in the same location, or the same letter in a different location, does not get blacked out.

Is that correct?

Particular letter gets blacked out, no matter where I place it.
Different letter in the same location does not get blacked out

It seems to be a key bit of evidence that the effect is locked to a particular character, no matter where you place it. Some weird kind of Style might explain the effect.

It is certainly not a case of Format → Character → Highlighting with colour black because that results in a white character on a black background. In any case, this would be specific to a location and would not “follow” the character around your document.

You seem to have discovered “default redaction” for any specific letter. (Sorry, that is probably not helpful.)

It’s a rather interesting problem. It certainly has me stumped. I appreciate your thoughts and problem-solving!

This seems to be linked to the keyboard. What happens in another application, e.g. Notepad, when you hit “capital F”? If it works correctly there, try to determine what is generated by Shift+F: in a blank document, type a line of 5 a’s, then a line of 5 F’s, then a line of 5 a’s. Save the document as .fodt. Open it in a text editor. Search for the 5 a’s and see if next paragraph has 5 F’s or something else.

Pls test changing OpenGLoption in Menu/ToolsUOptions/LibreOffice/View

No issues in a new .odt document. No issues in Notepad.
Problem solved by the OpenGLoption suggestion!
Thanks so much for your input. Not sure why it worked, but that’s ok. I’m just glad it did.