The corner rounding is now applied to the bottom of the tabs, which is an improvement. The rounding of corners in the Speed Dial seems to respect the theme setting, but that of the tabs is less. That would be OK if the range for corner rounding was increased.
I have edited the topic title as this would solve the problem and also improve speed dial thumbnails.
Specs: AMD A10-6800K, 8 Gb on Win 10 64-bit 1903 build 18362.388 ā¢ Snapshot 2.9.1675.11 (64-bit)