Hi! I found some inconsistencies with this plugin extmarks in these areas.
The first one is in :h extendnew()


As you can see in the above image, once I go down, the parenthesis after extend doubles becoming something from extend() to extend()().

The next one is in :h feedkeys()


As you can see in the above image, the string with some icon before changes to stringng without icon as I go down.

The third one is in :h nvim_feedkeys()


As you can see in the above image, the nvim_feedkeys() in blue becomes nvim_feedkeys()) once i go down.

What do you think might be going wrong here.