Python console does not automatically scroll to the bottom

[yungyuc]

When the text box contains too many lines, the Python console does not automatically scroll to the last line.

Example: The following commands are entered in sequence.

print("a")
print("b")
print("c")
print("d")
print("e")
print("f")
print("g")

The input box disappears after print("e"):

The following commands are entered in sequence, and the input box disappears.

To solve this issue, only the upper text box for the execution results should allow to scroll.

[yungyuc]

@Tucchhaa could you please help clarify if this issue is related to the code introduced in PR #665?

[Tucchhaa]

@yungyuc yes, it is definitely related.

Currently the scroll_area scrolls to the bottom only when something is typed to the command editor (code).

To fix this issue, we need to add logic that will make scroll_area scroll to the cursor location in the command editor.

There are two possible fixes:

1. Fast and easy fix: Scroll scroll_area to the cursor position when scrollbar range has changed (Qt's QScrollBar::rangeChanged event)
   Small issue: because height of the command editor and history editor is updated at different times and scroll to the cursor position is performed two times, a subtle "shaking" will appear:

Screen.Recording.2026-03-23.at.15.39.42.mov

2. Harder fix (but not hard): update height of both editors in one layout update pass and then perform scroll one time.
   That would fix the issue and "shaking"

[yungyuc]

Thanks for the clarification. Before jumping into discussing the detail of the proposed solution, I wonder how they connect to the general plan to make the Python console as a general editor: #681 ?