The current version of keyword.item.html is not very user friendly. The list of existing keywords are all stacked without space. When selecting one keyword, there is no visual hint about which one was selected. When updating a keyword the button is still named "Create keyword".

So here is a patch that improves the situation.

committed in rev6319:20e77c3ce6f6.

Also you might want to add the ability to stay in
add new keyword mode. The code to do this in the classic tracker is:

     <input type="checkbox" id="continue_new_keyword"
            name="__redirect_to"
            tal:attributes="value
                            
string:${request/base}${request/env/PATH_INFO}?@template=item;
                            checked python:True" />
     <label for="continue_new_keyword" i18n:translate="">Continue adding 
keywords.</label>

Bah make that rev6320:6dabae8da31a the prior rev put the patch on the 
issue2550923_computed_property branch.