Internal error while (re)rendering widgets

Start by reproducing the error on Windows with overlapping widgets, resizing, or overflowing text, then trace the callback from windows/widgets/core_widget_classes/ctk_base_class.py into core_rendering/draw_engine.py and core_rendering/ctk_canvas.py. Confirm how the affected canvas coordinate updates behave in these cases. Done means the reported Tkinter callback error no longer occurs during those UI changes.

customtkinter 5.2.2
Windows 10 Version 10.0.19045 Build 19045

I couldn't reliably reproduce the error, but it gets thrown occasionally whenever the UI dynamically changes, such as pressing a button or showing/hiding widgets.

Is is similar to #1006, but I am using no threads explicitly, but the .after() method.

Update: I've found out that the error gets thrown when wigets overlap when they shouldn't. Resizing my window or intentionally overflowing a text box can cause the error to be thrown reliably.

Traceback (most recent call last):
  File "\Lib\tkinter\__init__.py", line 1962, in __call__
    return self.func(*args)
           ^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_widget_classes\ctk_base_class.py", line 188, in _update_dimensions_event
    self._draw(no_color_updates=True)  # faster drawing without color changes
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\ctk_frame.py", line 110, in _draw
    requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._current_width),
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\draw_engine.py", line 128, in draw_rounded_rect_with_border
    return self.__draw_rounded_rect_with_border_font_shapes(width, height, corner_radius, border_width, inner_corner_radius, ())
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\draw_engine.py", line 285, in __draw_rounded_rect_with_border_font_shapes
    self._canvas.coords("inner_oval_1_a", border_width + inner_corner_radius, border_width + inner_corner_radius, inner_corner_radius)
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\ctk_canvas.py", line 87, in coords
    super().coords(coords_id, *args[:2])
  File "\Lib\tkinter\__init__.py", line 2836, in coords
    self.tk.splitlist(
TypeError: splitlist() argument must be encoded string without null bytes, not str
Exception in Tkinter callback
Traceback (most recent call last):
  File "\Lib\tkinter\__init__.py", line 1962, in __call__
    return self.func(*args)
           ^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_widget_classes\ctk_base_class.py", line 188, in _update_dimensions_event
    self._draw(no_color_updates=True)  # faster drawing without color changes
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\ctk_label.py", line 161, in _draw
    requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._current_width),
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\draw_engine.py", line 128, in draw_rounded_rect_with_border
    return self.__draw_rounded_rect_with_border_font_shapes(width, height, corner_radius, border_width, inner_corner_radius, ())
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\draw_engine.py", line 309, in __draw_rounded_rect_with_border_font_shapes
    self._canvas.coords("inner_rectangle_1", (border_width + inner_corner_radius,
  File "\Lib\site-packages\customtkinter\windows\widgets\core_rendering\ctk_canvas.py", line 99, in coords
    super().coords(tag_or_id, *args)
  File "\Lib\tkinter\__init__.py", line 2836, in coords
    self.tk.splitlist(
TypeError: splitlist() argument must be encoded string without null bytes, not str