Crash / Slow Memory Leak when saving [Fedora 43]

[BW89]

Issue:
No files are saved. Different behaivior depending on start method.

Version:
object-editor-5.7.0-linux-x64

Description / Steps to reproduce the issue
I treid editing a dat file (adding a bridge to trackst.dat), but when saving no file is saved.

When starting the app via the GUI (double clicking the application in Dolphin) depending on the save method two issues occur: simply pressing save does nothing. No files are changed, but the app remains usable (opening other files, viewing parameters...). But using the save as Parameter it allows me to choose a location, put after that it is not responsive, and the pressed button from the filetype selection is still highlighted. In this situation the memory consumption rises by about 1MiB/Minute.

When starting the app via the Terminal ( ./ObjectEditor ) and trying to save a file it crashes and the attached Exception gets printed in the terminal window.
ObjectEditor_exception.txt

System Information:
Operating System: Fedora Linux 43
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.17.12-300.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 3090
Product Name: X570 Taichi