How to resolve issues with custom themes after upgrading

Description:
I have created a custom theme before the release of the 12.2 DXperience suite. After the project upgrade, there were issues with the different height of controls.

Answer:
When migrating to a new DXperience version, it is necessary to upgrade a custom theme:

1. Upgrade a custom theme directory (especially skin files) via the Project Converter tool;
2. Rebuild the custom theme assembly;
3. Update a reference to the custom theme assembly.
   Note that starting with version 12.2, we have changed the rendering mechanism of some editors. As a result, some manual corrections are required.
   To resolve the issues, it is necessary to delete the following selectors and their CSS rules from the styles.css file in the App_Themes/Theme/editors directory folder:

CSS
dxeTextBox_Theme td.dxic  
{  
...  
}  

dxeMemo_Theme td  
{  
...  
}  

.dxeButtonEdit_Theme .dxeEditArea_Theme,  
.dxeButtonEdit_Theme td.dxic  
{  
...  
}  

dxeButtonEdit_Theme td.dxic  
{  
...  
}  

Where Theme is the name of the applied theme.
See Also:
General questions about themes, arising after an upgrade