When the special character dialog is resized the grid adjusts to the new dimension with larger or smaller cells. That does not work for the newly introduced controls looks a bit sloppy. Ideally the cell size is the same as for the full grid. However, I would accept a WFM.
Created attachment 186466 [details] size 1
Created attachment 186467 [details] size 2
No repro Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: c4a58634753a84b09f20f7271d6525a6656522d3 CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: fr-FR (fr_FR); UI: fr-FR Calc: CL threaded
The attached screenshots show the cosmetic problem, so opening this again.