My past two bug reports have been immediately closed (after a response), but still, this issue is persisting and it's being assumed as not an issue despite my proof below.
I have the latest plugin version.
I tried this on a fresh server (no plugins except this one and a permission plugin).
Try the prefixes below and I'm sure it'll occur. Can this be fixed or do I need to look for an alternative plugin?

Bug Report

Type /ver NametagEdit and post the output.
[07:32:08 INFO]: NametagEdit version 4.4.2
[07:32:08 INFO]: Authors: sgtcaze and Cory

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver
[07:34:00 INFO]: This server is running Paper version git-Paper-137 (MC: 1.14.4) (Implementing API version 1.14.4-R0.1-SNAPSHOT)

Please explain your issue. How do you trigger it?
I'm not entirely sure of the pattern yet, but certain prefixes do not work. Examples:
Prefix: '&5[Subscriber]&7 ' (There's a space in prefix but not in the name)

http://prntscr.com/ok9bp4

Prefix: '&5[Subscribe]&7 ' (Seems removing the "r" allowed the space to process?)

https://prnt.sc/ok9cjv

Prefix: '&5[Subscribe test]&7 ' ("t]" seem to mess up the prefix)

https://prnt.sc/ok9duq

Prefix: '&5[God Donator]&7 ' (I don't know what's happening here. There's no pattern. The name has no space, doesn't "process" the &7 color code, and even removes the beginning letter from the player's name)

https://prnt.sc/ok9i3r

Prefix: '&1Server Admin&7 ' (I wanted to say the brackets were the only constant, but even when I remove them, the second space doesn't get processed)
(Yes, I also tried Prefix: '&1Server Admin&r &7') - When I do that, it seems to ignore the &7 after the second space, because my name is white (due to &r).

http://prntscr.com/ok9kw1

I can do more examples to further narrow the issue, but I'm hoping this may be enough to find a solution as to why the prefix parsing seems to be a little bit messed up.

My past two bug reports have been immediately closed (after a response), but still, this issue is persisting and it's being assumed as not an issue despite my proof below.
I have the latest plugin version.
I tried this on a fresh server (no plugins except this one and a permission plugin).
Try the prefixes below and I'm sure it'll occur. Can this be fixed or do I need to look for an alternative plugin?

Bug Report

Type /ver NametagEdit and post the output.
[07:32:08 INFO]: NametagEdit version 4.4.2
[07:32:08 INFO]: Authors: sgtcaze and Cory

What version of Bukkit/Spigot/PaperSpigot are you using? Type /ver
[07:34:00 INFO]: This server is running Paper version git-Paper-137 (MC: 1.14.4) (Implementing API version 1.14.4-R0.1-SNAPSHOT)

Please explain your issue. How do you trigger it?
I'm not entirely sure of the pattern yet, but certain prefixes do not work. Examples:
Prefix: '&5[Subscriber]&7 ' (There's a space in prefix but not in the name)

http://prntscr.com/ok9bp4

Prefix: '&5[Subscribe]&7 ' (Seems removing the "r" allowed the space to process?)

https://prnt.sc/ok9cjv

Prefix: '&5[Subscribe test]&7 ' ("t]" seem to mess up the prefix)

https://prnt.sc/ok9duq

Prefix: '&5[God Donator]&7 ' (I don't know what's happening here. There's no pattern. The name has no space, doesn't "process" the &7 color code, and even removes the beginning letter from the player's name)

https://prnt.sc/ok9i3r

Prefix: '&1Server Admin&7 ' (I wanted to say the brackets were the only constant, but even when I remove them, the second space doesn't get processed)
(Yes, I also tried Prefix: '&1Server Admin&r &7') - When I do that, it seems to ignore the &7 after the second space, because my name is white (due to &r).

http://prntscr.com/ok9kw1

I can do more examples to further narrow the issue, but I'm hoping this may be enough to find a solution as to why the prefix parsing seems to be a little bit messed up.

Use the latest Dev build
https://ci.nametagedit.com/job/NametagEdit/lastSuccessfulBuild/artifact/target/NametagEdit.jar

16 character limit on <1.13, read FAQ
1.13+ doesn't have a character limit.

[07:34:00 INFO]: This server is running Paper version git-Paper-137 (MC: 1.14.4) (Implementing API version 1.14.4-R0.1-SNAPSHOT)

16 character limit on <1.13, read FAQ

@NEZNAMY Read the post.

[07:34:00 INFO]: This server is running Paper version git-Paper-137 (MC: 1.14.4) (Implementing API version 1.14.4-R0.1-SNAPSHOT)

@JustOneMoreBlock Just tried the dev build and unfortunately, the issue still isn't fixed.

@JustOneMoreBlock
As seen here:

The user's name is "ZanyZany" with the prefix "&5[Example Donator]&7 "
Command used: /nametagedit player ZanyZany prefix &5[Example Donator]&7

/ver nametagedit:
[21:16:56 INFO]: NametagEdit version 4.4.3
[21:16:56 INFO]: Authors: sgtcaze and Cory

Eh, you keep closing the issue (#377) without confirming the issue is fixed. Either you don't care about this plugin or you don't know how to fix it. Either way, I switched to the plugin "TAG Reborn"; thankfully it's a great alternative.