Updating components using maintenance tool and online repository gets stuck unpacking

We use QtIFW to create an installer for our software components and make them available online.

Since we started using an online installer, we have had the following problem:

• Our customers download the installer (https://gitlab.com/ketek/software/installer/-/releases/2024.09.05/downloads/KETEK_Software_Setup_x64.exe)
• If the customer only installs some of the components (e.g. VICODaemon) and then wants to install another component using the maintenance tool (e.g. VICOScope), the download works but the installer gets stuck when unpacking.
  
• However, if you use the CLI with:

  .\MaintenanceTool.exe --confirm-command install VICOScope
  

  download, unpacking and installation works.

What could be the problem here? Unfortunately, no log file is written when using the graphical user interface.