[BUG] Avalonia: UI state mismatch for upgradable packages/apps selection

[igorskyflyer]

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• I have searched for my issue and have not found a work-in-progress/duplicate/resolved issue.
• I have tested that this issue has not been fixed in the latest (beta or stable) release.
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• This issue is about a bug (if it is not, please use the correct template).

UniGetUI Version

v2026.1.10

Windows version, edition, and architecture

Windows 11 Pro 26200.8457 x64

Describe your issue

Just like mentioned in the resolved #4009, where this bug was observed initially (classic mode now), it seems the bug has crawled into the Avalonia version as well.

Upon launch, UniGetUI shows that the upgradable packages/apps are selected, yet they are not, see screenshot below.

Figure 1. UniGetUI UI/state mismatch

Steps to reproduce the issue

1. Disable classic mode in the Settings (= use Avalonia)
2. Notice that UI/state mismatch

UniGetUI Log

N/A

Package Managers Logs

N/A

Relevant information

No response

Screenshots and videos

No response