zsh-autocomplete: Menu items not showing with OMZ

When I try using the suggestions, they do not appear at the bottom of the prompt. I always have to use the down arrow to bring them up. They seem to flicker when I press the tab key (unless there is only one obvious choice). This used to work in Ubuntu 20.04 with the same Agnoster theme.

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• I have carried them out to the letter.

Failure to do so can and will result in your issue being closed without warning.

Environment

print -l $_autocomplete__funcfiletrace
git -C ~zsh-autocomplete log --oneline -n1

$ print $VENDOR $OSTYPE $SHELL $ZSH_ARGZERO $ZSH_PATCHLEVEL
ubuntu linux-gnu /usr/bin/zsh /usr/bin/zsh ubuntu/5.8.1-1

$ print -l $_autocomplete__funcfiletrace
/home/avneesh/.zshrc:82

$ git -C ~zsh-autocomplete log --oneline -n1
aed8e17 (HEAD -> main, origin/main, origin/HEAD) Fix recent-dirs naming conflict

• Operating system: Linux Mint 21 (Vanessa), downstream of Ubuntu 22.04 (Jammy) and Debian bookworm
• Terminal emulator: Terminator (version 2.1.1), ZSH, Agnoster theme

• I have filled out the fields above.
• I have ran the commands in the code block above.
• I have pasted their output into the same block.

Steps to reproduce

cd $(mktemp -d)
git clone --depth 1 -- https://github.com/marlonrichert/zsh-autocomplete.git
> .zshrc <<EOF
PS1='%# ' PS2= RPS2='%^'; setopt transientrprompt interactivecomments
source ~/zsh-autocomplete/zsh-autocomplete.plugin.zsh
EOF
env -i HOME=$PWD PATH=$PATH TERM=$TERM ${TERMINFO:+TERMINFO=$TERMINFO} zsh -d

• I have run the code block above to create a test environment.
• I have reproduced my problem in this environment in the most minimal way possible.
• I have copy-pasted my entire test session into the same code block.

Somehow, in the above steps, the issue does not occur.

The problem is not getting options here

In the above test session, they do come up