TextEdit::clip_text is being ignored for singleline text

[Barugon]

Describe the bug
TextEdit::clip_text is being ignored for singleline text. With clip_text set to true, the TextEdit widget expands when the text gets too long.

Here are a couple screenshots showing the behavior.

Before adding text:

Pasting in some long text:

If I maximize the window (also odd behavior since I have window resizing disabled) then you can see the full size of the TextEdit:

This behavior started with v0.30 and still exists in the main branch.

[edit] This may be related to #5500.

[emabee]

Another example of likely the same issue is here:

The code is here:

use anyhow::{anyhow, Result};
use eframe::{run_native, App, Frame, NativeOptions};
use egui::{CentralPanel, Context, ScrollArea, TextEdit, TopBottomPanel, ViewportBuilder};
use egui_extras::install_image_loaders;
use std::process::ExitCode;

fn main() -> ExitCode {
    match run() {
        Ok(()) => ExitCode::SUCCESS,
        Err(e) => {
            println!("{e:?}");
            ExitCode::FAILURE
        }
    }
}

fn run() -> Result<()> {
    match run_native(
        "repro_textedit_issue",
        NativeOptions {
            // viewport = native OS window
            viewport: ViewportBuilder::default()
                .with_inner_size([650.0, 300.0])
                .with_min_inner_size([650.0, 300.0]),
            ..Default::default()
        },
        Box::new(|cc| {
            install_image_loaders(&cc.egui_ctx);
            Ok(Box::new(UiApp::new()))
        }),
    ) {
        Ok(()) => Ok(()),
        Err(e) => Err(anyhow!("Couldn't start GUI, caused by {e}")),
    }
}

pub struct UiApp {
    data: Vec<(String, String)>,
}
impl UiApp {
    pub fn new() -> Self {
        UiApp {
            data: vec![
                (
                    "1_short".to_string(), //
                    "a_short".to_string(),
                ),
                (
                    "2_short".to_string(),
                    "b_longlonglonglonglonglonglonglonglong".to_string(),
                ),
                (
                    "3_longlonglonglonglonglonglonglong".to_string(),
                    "c_short".to_string(),
                ),
                (
                    "4_longlonglonglonglonglonglonglong".to_string(),
                    "d_longlonglonglonglonglonglonglonglonglonglonglong".to_string(),
                ),
            ],
        }
    }

    fn add_textedits(&mut self, ui: &mut egui::Ui, hide: bool) {
        ui.label(format!(
            "All four lines should have the same indentations as the first. This is {} password().",
            if hide { "with" } else { "without" },
        ));
        for dat in &mut self.data {
            ui.horizontal(|ui| {
                ui.add(
                    TextEdit::singleline(&mut dat.0)
                        .desired_width(100.)
                        .clip_text(true),
                );

                ui.add(
                    TextEdit::singleline(&mut dat.1)
                        .desired_width(100.)
                        .clip_text(true)
                        .password(hide),
                );
                ui.label("end of line");
            });
        }
    }
}

impl App for UiApp {
    fn update(&mut self, ctx: &Context, _frame: &mut Frame) {
        TopBottomPanel::top("top").show(ctx, |ui| {
            ui.label("the top");
        });
        TopBottomPanel::bottom("bottom").show(ctx, |ui| {
            ui.label("the bottom");
        });

        CentralPanel::default().show(ctx, |ui| {
            ScrollArea::both().show(ui, |ui| {
                self.add_textedits(ui, false);
                ui.add_space(20.);
                self.add_textedits(ui, true);
            });
        });
    }
}

[MetaflameDragon]

Dealt with similar issues in a modal (just a single-line TextEdit placed directly into a modal)

Looks like it's a duplicate of #5500