[Bug]: 只要用一段时间，不是必现Bug，就无法显示窗体

### 操作系统 / v2rayN / Core 版本

windows10/最新/最新 早期版本也有这个问题

### 预期情况

重启

### 实际情况

只要用一段时间，不是必现Bug，就无法显示窗体

### 复现方法

用一段时间

### 软件日志

2026-08-05 09:28:44.1440-INFO v2rayN start up | v2rayN - V7.12.3 - X64 | D:\Program Files\Common\v2rayN-windows-64\ | D:\Program Files\Common\v2rayN-windows-64\点我启动.exe | Microsoft Windows NT 10.0.18363.0
2026-08-05 09:28:44.9690-INFO Setup Scheduled Tasks
2026-08-05 09:29:24.3131-INFO OnClosing -> WindowClosing
2026-08-05 09:54:34.5992-INFO OnClosing -> WindowClosing
2026-08-05 11:04:08.7261-INFO OnClosing -> WindowClosing
2026-08-05 11:39:17.5339-INFO OnClosing -> WindowClosing
2026-08-05 13:23:46.4531-INFO MyAppExitAsync Begin
2026-08-05 13:23:46.7874-INFO MyAppExitAsync End
2026-08-05 13:24:00.6084-INFO v2rayN start up | v2rayN - V7.12.3 - X64 | D:\Program Files\Common\v2rayN-windows-64\ | D:\Program Files\Common\v2rayN-windows-64\点我启动.exe | Microsoft Windows NT 10.0.18363.0
2026-08-05 13:24:01.2842-INFO Setup Scheduled Tasks
2026-08-05 13:24:04.6452-INFO OnClosing -> WindowClosing

### 内核日志

无

### 额外信息

_No response_

### 我确认已更新至最新版本

- [x] 是

### 我确认已查询历史issues

- [x] 是

### 我确认系统版本是受支持的

- [x] 是

The issue describes a non-deterministic GUI window display bug after prolonged use. Start by examining the window lifecycle and event handling code, particularly the 'OnClosing' events logged. Look for resource leaks or state corruption in the UI thread. Reproducing the issue may require running the application for an extended period and monitoring window management.

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