Loading bug fix for #302

[codenamewei]

Description

Hi @kengeSkyMind , for this error fix, due to the structure of v1, its hardly reproducible.
it's very much seen in v2

Can you just run a simple test , focusing on loading project, importing project, reload project, delete some images
try with project of

• 0 image
• 1 image
• a set of images (50 - 300)
  to see if anything behave weird from how it should work

if none, do merge and delete this branch.

Please refer to bug #302

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Tested on?

• Windows
• Linux Ubuntu
• Centos
• Mac
• Others (State here -> xxx )

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[kengeSkyMind]

ran a few simple test including the ones that you mentioned, looks good