Not sure if this is my phone but it only happens in this forum. Hand to explain but randomly, when typing words, the first letter of the word is ignored and spellcheck corrects the word as it would without the first letter. For example I type "hard' and the last three letters are underlined. If I don’t do anything to change this the word is corrected to hand.
Setting the format to plain text then back to HTML seems to resolve issue but it's only temporary.
I do hAve a screenshot as an example butility i hAve no way to uplead it.
Check that last sentente as an eevidential exhibit!!