Admin List Limit - Expand Admin Autocomplete Limit PRO
Per default, all autocomplete fields (e.g. products, categories, options, etc.) will have a limit 5 entries - hardcoded.
With this easy to handle extension, you will have now full control how many entries shall be displayed and how the autocomplete field will be displayed.
Installed as module (see Menu Extensions > Modules), you can (only PRO Version, FREE Version does not have any settings to define):
1. enable/disable the module
2. set the limit
3. define height of the displayed field
4. set max width and height of field
If you do not need control over the settings and have enough with fix 20 entries, use the free module: Free Version