Environment

• Version: Version: 2.5.4
• Installation: git clone
• PHP version:
• OS: Debian stable
• Database: MariaDB
• Parameters: unavailable (hosted by a friend, available upon request)

What steps will reproduce the bug?

1. save a page in wallabag using the Firefox web extension, do not add tags
2. go to the page in the wallabag website, click on the Add a tag button
3. type the string performance,realtime,linux,kernel,patch in the field
4. observe how no tag is being added

At first I thought it was because I had more than three tags: if I only add performance,realtime,linux, those tags get added and then I can add kernel,patch. But I have tried to add the tags foo,bar,baz,quux and that works so I'm not exactly sure what's going on... maybe it's the string length?