starship: Ridiculously long prompts sometimes don't line-wrap correctly

Current Behavior

When the prompt is ludicrously long line-wrapping breaks.

Expected Behavior

It should just line wrap

Additional context/Screenshots

Without starship, and with a boring old PS1 setting very long prompts line-wrap in narrow terminals:

But with starship, line-wrapping can sometimes go all wibbly with very long prompts. In this screen shot you can see that it’s just fine with a short prompt but when I change to a git branch with a ludicrously long name the prompt breaks badly:

This may be down to some not-quite-correct escaping/printing of ANSI colour codes, as seen here:

Environment

• Starship version: 1.5.4
• bash version: GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin20) Copyright © 2007 Free Software Foundation, Inc.
• Operating system: Mac OS 11.6.4
• Terminal emulator: iTerm.app 3.4.15
• Git Commit Hash:
• Branch/Tag:
• Rust Version: rustc 1.59.0
• Rust channel: release
• Build Time: 2022-03-24 19:12:59 +00:00

Relevant Shell Configuration

# sets window title
export PROMPT_COMMAND='echo -ne "\033]0;${HOSTNAME}: $(realpath .)\007"'
# this also puts stuff in $PROMPT_COMMAND
eval "$(direnv hook bash)"
...
eval "$(starship init bash)"

and checkwinsize is on and is setting $COLUMNS correctly when I change the size of the terminal.

$ shopt|grep win
checkwinsize   	on

Starship Configuration

add_newline = false

[character]
error_symbol = "[\\$](bold red)"
success_symbol = "[\\$](bold green)"

[cmd_duration]
disabled = true
[custom.c]
command = "cc --version|awk '/clang/ { printf \"clang \" } /Free Software Foundation/ { printf \"gcc \" }'; cc -dumpversion"
extensions = ["c", "h", "xs"]
format = "using [custom.C $output ](149 bold)"

[directory]
truncate_to_repo = true
truncation_length = 0
truncation_symbol = " …/"

[git_branch]
format = "[on $branch ]($style)"

[line_break]
disabled = true

[nodejs]
disabled = true

[perl]
detect_extensions = ["pl", "pm"]
format = "using [$symbol ($version )]($style)"
symbol = "perl"