Table headers containing spaces are unstable

When I create table with headers, like

header: {
values: [["Averaging"], ["Bulk"], ["Young"], ["Shear"], ["Poisson"]],
}

I find out that its impossible to have spaces in header, like "Averaging Method" - header with space is not shown.
Tried   and it moves text unpredictably.

Its nowhere near production ready, could you please fix such simple and important feature, thanks.

首先，使用 header.values 和类似 "Averaging Method" 的标签，在表头配置下重现该问题。跟踪表头的布局和渲染方式，然后验证包含空格的表头无需依赖 \u0026nbsp; 即可一致地显示。