Issue with icon removal in mintMenu applet

[mp107]

I have installed Linux Mint 19 MATE several months ago and I came across some issue with mintMenu applet.

Steps to reproduce the problem:

1. Open mintMenu;
2. Select category;
3. Select an icon with right click mouse and choose "Delete from menu" (this option is not visible for some of the applications);
4. Shortly after that click on the previously chosen icon (one needs to manage click it before it disappears but it is possible as it takes around a second);
5. The whole mintMenu applet hangs.

I came across this issue during removal of a few icons created for Windows applications by Wine.
I accidentally clicked second time on an icon before it has been removed from the menu.

Notebook: Lenovo X230
OS: Linux Mint 19 MATE 64-bit
mintMenu applet version: 5.9.0

I will provide logs but I am not sure where exactly to look for those related with an issue.

Here is sysctl log from the time issue occurred: https://gist.github.com/mp107/6350a2f96d5fbe9f7b9a90f07ca66dd7
The icon I have created before using this script: https://gist.github.com/mp107/bb301b06a9eddb387b62d5ebc49fe3a1
Furthermore, as an effect of this issue it appeared some kind of trace after the context menu showed on the screenshot below.

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It disappeared only after force restarting mate-panel using:
killall -9 mate-panel