2 added link and correction
source | link

You can do the following:

-InstallInstall wine-staging (winewinehq-staging) in your system (not from POL). It must replace wine.

-Go to POL and in "Wine version" select "System".

Now you can check "enable GTK3 theming".

You can do the following:

-Install wine-staging in your system (not from POL). It must replace wine.

-Go to POL and in "Wine version" select "System".

Now you can check "enable GTK3 theming".

You can do the following:

-Install wine-staging (winehq-staging) in your system (not from POL). It must replace wine.

-Go to POL and in "Wine version" select "System".

Now you can check "enable GTK3 theming".

1
source | link

You can do the following:

-Install wine-staging in your system (not from POL). It must replace wine.

-Go to POL and in "Wine version" select "System".

Now you can check "enable GTK3 theming".