Bug 134500

Description:
I've been using Draw for simple electronic schema designs and there I use a lot of connectors from rectangle/circle/custom drawing to another. Connector lines need to be adjusted pretty much always. But when adjusting the connector line route by dragging from point (small rectangles in the line) the connector line shows oftentimes something else than where it'll end up when I release mouse button. E.g. moving the line right can show the real-time preview of line's new position 1cm or more (relative to A4 paper size) horizontally incorrectly. The line will move to exact position what mouse pointer shows but not where preview shows.

This seems to happen more often when the drawing is more complex and LibreOffice has been running for a longer period of time (days to weeks).

This issue has been there for a long time (years). There used to be more severe issues thus didn't report it before.

Steps to Reproduce:
1. Create a pretty complex drawing (multiple rectangles with multiple connection points on the edges of rectangle)
2. Add multiple connector lines from rectangle to another and adjust routing so that the line does over cross over rectangles (L-shape, U-shape).
3. Adjust line routing with mouse (may require adjusting multiple lines or that Draw has been running for longer period of time) and see what is the preview line position and what is the actual line position after mouse button release.

Actual Results:
Connector line follows the mouse pointer but not real-time preview information.

Expected Results:
When Draw shows the real-time preview of the connector line route when adjusting it, I'm expecting that when I release the mouse button the line will be according to preview. Mouse pointer can be anywhere on the screen. (now it's vice versa)


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 7.0.0.0.beta2
Build ID: 00(Build:0)
CPU threads: 16; OS: Linux 5.7; UI render: GL; VCL: kf5
Locale: fi-FI (fi_FI.utf8); UI: en-US
Calc: threaded

(This is a copy from Draw -> About LibreOffice but it shows Calc: threaded)