求助：关闭主窗体后进程未终止（仅部分电脑出现）

Hey folks, here's a clear breakdown of the bug I've been digging into:

• This issue has cropped up on 2 internal company machines and 1 client machine, and so far I haven't been able to pin down a consistent trigger pattern.
• I've successfully reproduced the error with a super stripped-down test program that only interacts with an OpenFileDialog—no extra logic or dependencies involved.
• Critical detail: This only occurs when running the compiled executable (not when debugging in IDE mode). After closing the form, the process stays active in the background indefinitely.

Minimal Reproducible Code #

Public Class Form1
    Private ofdAbrir As New OpenFileDialog()

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Launch the file picker dialog
        ofdAbrir.ShowDialog()
        ' Try to close the form right after dialog interaction
        Me.Close()
    End Sub
End Class

Additional resources to reproduce the bug:

• A complete project package containing this test code
• A demo video that shows the bug in action (specifically highlighting the process lingering in Task Manager after the form is closed)

内容的提问来源于stack exchange，提问作者Moises Junior