Snapshot removal fails with "Snapshot not found"

[hippalectryon-0]

What happened?

Possibly related to #1695

Taking a snapshot and clicking on "Remove snapshot" right away raises "Snapshot not found". Attempting to create a new snapshot right after that raises "Can not create snapshot of an empty sandbox"

To Reproduce

• Create a new box
• Open notepad.exe and save a text file on the desktop. Close notepad. (goal: make the box non-empty)
• Snapshot Manager > Take Snapshot named "New Snapshot"
  • The snapshot is created
• Click Remove Snapshot (without clicking on the snapshot, which is already selected as indicated by the highlighting)
  • We get the error "Snapshot not found"
  • Additionally, clicking Take Snapshot (named anything) raises "Can not create snapshot of an empty sandbox"

Expected behavior

We expect the snapshot to be removed. We expect the following creation attempt to work since the first one worked.

What is your Windows edition and version?

Win10 Home 20H2 19042.1586

In which Windows account you have this problem?

A local or Microsoft account without special changes.

Please mention any installed security software

Windows Defender

What version of Sandboxie are you running?

SB-Plus 1.0.13

Is it a regression?

No response

List of affected browsers

No response

In which sandbox type you have this problem?

In a Standard isolation sandbox (yellow sandbox icon).

Is the sandboxed program also installed outside the sandbox?

Not relevant to my request.

Can you reproduce this problem on an empty sandbox?

I can confirm it also on an empty sandbox.

Did you previously enable some security policy settings outside Sandboxie?

No response

Crash dump

No response

Trace log

No response

Sandboxie.ini configuration

No response

Sandboxie-Plus.ini configuration (for Plus interface issues)

No response