Created attachment 147932 [details]
Test ODS file
There are 41670 records in the attached spreadsheet. Searching in the auto filter search box makes Calc freezes.
Steps to Reproduce:
1. Click the autofilter drop down list in column A.
2. Type in some text (e.g., "2") in the autofilter search box to search.
Calc not responding.
You may wait for many hours to see whether Calc will become alive again.
Calc shows the search results within a reasonable time.
This kind of job works perfect in Excel. The data comes from real world daily work.
CPU 线程：4; 操作系统：Linux 4.15; UI 渲染：默认; VCL: gtk2;
区域语言：zh-CN (zh_CN.UTF-8); Calc: group threaded
Ubuntu 18.04.1 LTS x64.
Version: 126.96.36.199 (x64)
Build ID: 9d0f32d1f0b509096fd65e0d4bec26ddd1938fd3
CPU threads: 4; OS: Windows 10.0; UI render: default;
Locale: de-DE (de_DE); Calc: group
but *not* reproducible with:
Version 188.8.131.52 (Build ID: e183d5b)