Latest Az 6.0.0 module conflicts with PnP.PowerShell 1.3.0

Today new Az 6.0.0 module was released (we wait for this release since it should contain fix for this issue: Webapp:Set-AzWebApp doesn't update app settings of App service). However it introduced own problem: it conflicts with PnP.PowerShell 1.3.0. It is important in each order these 2 modules are imported: if PnP.PowerShell is imported before Az then call to Connect-AzAccount will throw the following error:

Connect-AzAccount : InteractiveBrowserCredential authentication failed:
Method not found: 'Void Microsoft.Identity.Client.Extensions.Msal.MsalCacheHelper.RegisterCache(Microsoft.Identity.Client.ITokenCache)'.
+ Connect-AzAccount
+ ~~~~~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [Connect-AzAccount], AuthenticationFailedException
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.Profile.ConnectAzureRmAccountCommand

Here is the minimal PowerShell code which allows to reproduce the issue:

Import-Module "PnP.PowerShell" -MinimumVersion "1.3.0"
Import-Module "Az" -MinimumVersion "6.0.0"
Connect-AzAccount

In order to avoid the error Az module should be imported before PnP.PowerShell:

Import-Module "Az" -MinimumVersion "6.0.0"
Import-Module "PnP.PowerShell" -MinimumVersion "1.3.0"
Connect-AzAccount