[Bug] Scene size changes after several zoom in/out

[MosiQt]

The scene size is intended to remain fixed.

Instructions for reproducing the issue:

1. Launch the SituationSimulator or NodeLink example.
2. Position 4 nodes at the corners of the scene and 1 in the center.
3. Experiment with zooming in and out, using the maximum level.
4. Occasionally, you may observe extra space being added to the scene, or the scene size may shrink, causing content to be cut off.

[mohsenkondori]

Remain: 1

[mohsenkondori]

Done.