Sketcher/EllipseByCenter creates an ellipse when exited under certain conditions

[0penBrain]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

Steps to reproduce:

• Open an empty sketch
• Select tool to create an ellipse by center
• Pick 2 first points (minor radius) of the ellipse
• Move the mouse so an ellipse is previewed, then move the cursor away so that ellipse became invalid (move in the direction of the minor axis, NaN is displayed in the value box)
• Right-click the mouse to exit tool (without having done the 3rd click) => ⚠️ an ellipse is added to the sketch (most probably the latest valid that was previewed)

Note: weird also, in the last step you can get mouse focus to another window and same thing will happen

Full version info

OS: Ubuntu 22.04.4 LTS (KDE/plasma)
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37243 (Git)
Build type: Debug
Branch: master
Hash: 0095e52466c79c2135fce860a341554f3f51156c
Python 3.10.12, Qt 5.15.3, Coin 4.0.0, Vtk 7.1.1, OCC 7.6.3
Locale: English/United States (en_US)

Subproject(s) affected?

Sketcher

Anything else?

No response

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