"2004h" at the end of each prompt and "2004l" after pressing Enter on DragonFlyBSD console with zsh 5.1.1

[Axel Beckert <abe@xxxxxxxxxxxxxxx>]

Hi,

I've just downloaded the DragonFlyBSD image from
http://ftp.halifax.rwth-aachen.de/dragonflybsd/iso-images/dfly-x86_64-4.2.4_REL.img.bz2,
started it inside kvm, installed zsh 5.1.1 with "pkg install zsh" and
started it.

I've set a very simple prompt inside ~/.zshrc:

PROMPT="%~ # "

But my prompt always looks like this:

~ # 2004h_

And if I press just Enter, it looks like this:

~ # 2004h2004l
~ # 2004h_

(Underscore shows where the cursor is.)

Even with "zsh -f" the prompt looks like this:

# 2004h_

With a little bit help of an internet search engine I found this
posting which suggests that this is related to the bracketed pasting:
http://www.zsh.org/mla/users//2015/msg00801.html

Anyone an idea how I get rid of these prompt postfixes? There seems no
global zshrc or similar. (And the global zshrc wouldn't be involved
anyways since it also happens with "zsh -f".)

		Kind regards, Axel
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