How to display custom icons in project sidebar of Jira Server 8.12 ?

[Ramarao Gaggara {Appfire}]

How to display custom icons in project sidebar of Jira Server 8.12 ?

It worked alright till Jira Server 8.11 with below approach, but since 8.12 custom icon is not getting displayed in project side bar. What changes that I need to apply on top of below implementation.

atlassian-plugin.xml

<web-resource ...>
  <resource type="download" name="versionmanager.css" location="/versionmanager/versionmanager.css"/>
  <resource type="download" name="version_edit.svg" location="/images/version_edit.svg"/>
  ...
</web-resource>

css file

.some-custom-icon {
 background-image: url("version_edit.svg");
 height:auto;
 width:auto;
}

 web-item in atlassian-plugin.xml

<web-item ...>
  <param name="iconClass" value="aui-icon-large some-custom-icon"/>
  ...
</web-item>

[Ramarao Gaggara {Appfire} · Accepted solution]

After removing below 2 lines of code from css file, I'm able to render custom icon in project sidebar even in Jira 8.12

 height:auto;
 width:auto;

Thanks !

[Dylan Longlands]

Trying to do this for Bitbucket Server Plugin, but cannot get the image to show. Is there anything additional I need to add? 

Web resource: 

<web-resource key="logo" name="Logo">
    <resource type="download" name="icon.css" location="css/icon.css"/>
    <resource type="download" name="Logo.svg" location="images/Logo.svg">
        <param name="content-type" value="image/svg+xml"/>
    </resource>
    <context>bitbucket.repository.nav</context>
</web-resource>

Web item:

<web-item ....>
   ...
   ...
   <param name="iconClass" value="aui-icon-large icon"
</web-item> 

CSS: 

.icon {
    background-image: url("../images/Logo.svg")
}

Thank you!