Description:
Every few saves when working on a Draw document, the save process hangs LO and does not release for 5-10 minutes. After several minutes i can see the save progress bar start to move towards completion but it is so slow it is basicall frozen. In most cases the save completes within 10 minutes but sometimes I give up waiting and force quit the application, losing my work in the process.

Steps to Reproduce:
1. Open or create a Draw document. Paste a bunch of text into a text box.
2. Press Crtl-S.
3. If the document saves as it should just repeat Ctrl-S and eventually LO will hang while it saves.

Actual Results:
Eventually LO freezes because it is locked in the Save process. It is random but on my machine it is repeatable every few saves. 
LO will remain frozen for 5-10 minutes. A few times I gave up waiting and force quit the application, losing my work in the process.

Expected Results:
The save process should complete almost instantly for these tiny documents.This happens with documents containing a single page so it is not because the files are huge or complex. They do not have any images in them. They only have 2-3 text boxes in them. 


Reproducible: Always


User Profile Reset: Yes



Additional Info:
This problem occurred a few years ago with LO. It turned out then that it was an issue with the 6th Generation of Intel's i3 Core CPU. The fix then was to disable OpenGL, CL, and turn off antialiasing i.e. it was related to the graphics subsystem. 

This time these fixes didn't work. I reported this as a bug with Mesa too but one of the support guys helped me and mesa was unable to report any problems.

I have reset my profile. 
I have gone into Advanced Configuration and disabled OpenGL. I have tried increasing the memory allocation for objects. No success.
I have tried Fresh and Stable.
I have tried appimages for multiple older versions and all of them hang on save eventually (versions after 6)
I have also tried several different linux kernels. The same hang.

Curiously, Writer 7.2 does not hang when saving. As far as I can tell this is related to Draw only. I'm not having any problems with Scribus or any other application. Could it be some change to the codebase for Draw's saving routine?

I managed to find an appimage for LO 6.0.x and so far this one works correctly. This is the last version of LO before the new ribbon bar was introduced I think.  I will keep testing but for now, LO Draw 7.2 is remains unusable.