Updating matplotlib version likely solves tkinter plot_canvas.draw() threading issue

requirements.txt

@@ -2,7 +2,7 @@ appdirs==1.4.4
 cycler==0.10.0
 future==0.18.2
 kiwisolver==1.3.2
-matplotlib==3.3.4
+matplotlib==3.7.0
 # numpy==1.19.3  ## do not include versioning to avoid versioning conflict
 pandas==1.1.5
 Pillow==8.4.0

src/csv_threading.py

@@ -99,8 +99,8 @@ class ExecCSVThread(Thread):
             try:
                 for j in range(4):
                     avx_lines[j].set_data([t, t], [0, 1])
-                print("The next line might crash the programm, outcomment if necessary")
-                #parent.plot_canvas.draw()  # equivalent to matplotlib.show()
+                #print("The next line might crash the programm, outcomment if necessary")
+                parent.plot_canvas.draw()  # equivalent to matplotlib.show()
             except DeviceAccessError as e:
                 ui_print("Failed to update figure: ", e)
 
@@ -192,8 +192,8 @@ def display_plot(parent):  # create plot of fixed size (pixels) from array
                  axes[2].axvline(x=0, color="r"), axes[3].axvline(x=0, color="r")]
     # Show new plot
     parent.plot_canvas = FigureCanvasTkAgg(figure, parent.plot_frame)  # create canvas to draw figure on
-    print("The next line might crash the programm, outcomment if necessary")
-    #parent.plot_canvas.draw()  # equivalent to matplotlib.show()
+    #print("The next line might crash the programm, outcomment if necessary")
+    parent.plot_canvas.draw()  # equivalent to matplotlib.show()
     parent.plot_canvas.get_tk_widget().grid(row=0, column=0, sticky="nesw")  # place canvas in the UI
 
     return figure, avx_lines