Windows Terminal version

1.19.10821.0

Windows build number

10.0.19045.4291

Other Software

No response

Steps to reproduce

I have a strange reflow bug that seems to occur only when the cursor is hidden. Steps to reproduce:

1. Paste the following Python code into a file named status.py:

   import time
   
   HIDE_CURSOR = "\x1b[?25l"
   LF_AND_CLEAR_LINE = "\r\x1b[2K"
   
   print("foo " * 100)
   print()
   print(HIDE_CURSOR)  # --> removing this line fixes the issue
   for i in range(100000):
       print(f"{LF_AND_CLEAR_LINE}working {i}...", end="", flush=True)
       time.sleep(0.05)

2. Start the script in a new, non-maximized window: start status.py
3. Take your mouse and rapidly change the width of the window, so that content is repeatedly reflowed. See heavy display distortions:
   
4. In the script, remove the "hide cursor" statement and redo the test. Everything works fine now, regardless how heavy you try to distort the display:
   

Expected Behavior

The reflow mechanism should work regardless of whether the cursor is rendered or not. The behaviour with the visible cursor is the correct one.

Actual Behavior

It looks as if the display reflow logic is broken when the cursor is not rendered, maybe the full line inclusive trailing whitespace is reflowed?