A System.NullReferenceException was throwing when get a **gif** image using Image.FromFile() method

[Amy-Li03]

Description

A System.NullReferenceException was throwing when get a gif image using Image.FromFile() method.
CallStack.txt

Expected behavior:
The gif image should get using Image.FromFile() method correctly.

Minimal repro:

1. Create a WinForms .NET core project targeting .NET 6.0
2. Add following code to the structure method of Form1
   Image.FromFile(@"\\ServerName\Images\animated.gif");
   Below is the animated.gif file:
   
3. Build and run the project

Configuration

.NET SDK 6.0.100-preview.7.21320.4

Regression?

Yes, this is a regression issue.

Other information

This issue doesn't repro when file was saved on a local path

[ghost]

Tagging subscribers to this area: @safern, @tarekgh
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Issue Details

---

Description

A System.NullReferenceException was throwing when get a gif image using Image.FromFile() method.
CallStack.txt

Expected behavior:
The gif image should get using Image.FromFile() method corectly.

Minimal repro:

1. Create a WinForms .NET core project targeting .NET 6.0
2. Add following code to the structure method of Form1
   Image.FromFile(@"\\ServerName\Images\animated.gif");
   
3. Build and run the project

Configuration

.NET SDK 6.0.100-preview.7.21320.4

Regression?

Yes, this is a regression issue.

Other information

This issue doesn't repro when file was saved on a local path

Author:	Amy-Li03
Assignees:	-
Labels:	area-System.Drawing, untriaged
Milestone:	-

[jkotas]

Note: This issue doesn't repro when file was saved on a local path

cc @adamsitnik

[ghost]

Tagging subscribers to this area: @dotnet/area-system-io
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

A System.NullReferenceException was throwing when get a gif image using Image.FromFile() method.
CallStack.txt

Expected behavior:
The gif image should get using Image.FromFile() method correctly.

Minimal repro:

1. Create a WinForms .NET core project targeting .NET 6.0
2. Add following code to the structure method of Form1
   Image.FromFile(@"\\ServerName\Images\animated.gif");
   Below is the animated.gif file:
   
3. Build and run the project

Configuration

.NET SDK 6.0.100-preview.7.21320.4

Regression?

Yes, this is a regression issue.

Other information

This issue doesn't repro when file was saved on a local path

Author:	Amy-Li03
Assignees:	-
Labels:	area-System.Drawing, area-System.IO, untriaged
Milestone:	-

[adamsitnik]

It's a bug that I've introduced in #53669. I've sent a fix in #54483

[safern]

@adamsitnik since this was a regression, are you going to port this to Preview6 branch?

[adamsitnik]

since this was a regression, are you going to port this to Preview6 branch?

We should definitely do that. Do we have some nice bot for that?

[Amy-Li03]

This issue has been fixed on .NET SDK latest build 6.0.100-preview.7.21324.6