Is your experience similar to spelling errors in written English?
I choose English because it's the primary (only?) language for this site, and while there are definite rules for the correct sequence of letters for a word, the rules for the language overall are not especially consistent. And it seems to me that English has a bazillion words in common use.
I have from time to time experienced that very weird sensation, as I look at an English word I've used in written language for fifty years, and it suddenly for a time it seems totally wrong and incomprehensible. I recall staring at the word "Our", thinking it could not possibly mean anything in English. This is rare, and doesn't last long. So far.
But it gives me some insight into aphasia, perhaps.
And we need spell-checkers for our writing, because in a stream of words we have written by pushing buttons, the brain elides the misplaced letters, it's almost impossible to spot them all, much less work to simply hand to someone else to read it fresh, then the errors seem obvious to them.
But it's the temporary, isolated dyslexia I find bizarre.