I am attaching a screencap from the serial monitor window. I have it pulled down to smallest size, although changing the window size seems to have no effect on the issue.
All of the little dots at the bottom are the current line being printed. You can't read anything until the autoscroll moves it up one line after a newline. Not so helpful.
In case anyone wonders, yes it looks like garbage, but it comes from some Radio-teletype I am trying to decode properly. Hopefully, I will have that done long before this gets acted upon.
It won't let me do that, with autoscroll on or off. There may be some difference in fonts or whatnot, IDK. But the bottom line is now always partly below the bottom edge of the window. With autoscroll on, the line that is printing should be automatically made visible.
I read through your report, TY for doing the hard stuff.
For the sake of clarity, my program was printing 1 character at a time Serial.write(ch); and occasionally throwing in a linefeed. The source was a 50-baud RTTY source, about 140ms per output character.
Doing it that way, every character that printed "unscrolled" my attempts to use the mouse-wheel to see it. Since you were printing line-by-line the manual scrolling worked.
I solved my issues in spite of that partially showing last line. It's still there annoying me, and everytime I scroll it up, the next letter printed scrolls it back down.
Hi @andrews_312. The bug is still unresolved. The Arduino IDE developers will close the GitHub issue report when it has been resolved. If you are subscribed to that issue you will get a notification at that time.