Natives libraries are not disposed

I'm using libGitSharp under IIS pool, when IIS pool is off I can compile my VS solution without any problems, but it I want to recompile the web site when the pool process is up, I always get an error with git2-106a5f2.dll assembly that is loaded and never disposed. All my libgitsharp code is around a USING statement.

Reproduction steps

Create a web project, code something with libgitsharp, run it, try to recompile the project

Expected behavior

I should be able to recompile my project without errors

Actual behavior

I get following error :
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\Microsoft.Common.CurrentVersion.targets(4943,5): warning MSB3061: Unable to delete file "....\bin\lib\win32\x64\git2-106a5f2.dll". Access to the path '...\bin\lib\win32\x64\git2-106a5f2.dll' is denied.

Version of LibGit2Sharp (release number or SHA1)

LibGitSharp 0.26.2

Operating system(s) tested; .NET runtime tested

Windows 10 2004, .NET 4.6.2

Commencez par reproduire le projet web sous IIS sur Windows 10 et par examiner le code libGitSharp dans l’instruction USING signalée. Étudiez la manière dont la git2-106a5f2.dll chargée est conservée après l’exécution du site web, puis vérifiez la correction en recompilant pendant que le pool IIS reste actif et en confirmant que la DLL peut être supprimée.