Mouse "Set focus (no select)" suppresses double-click-to-open in Power mode (13.25 x64)

In Power mode, double-click-to-open works with every left-button click mode — Select only, Auto-deselect, Full toggle — except "Set focus (no select)": there, a double-click only moves focus and never opens the file.

After 25 years of Total Commander I switched to Opus for good and am rebuilding TC's mouse behavior: left button sets focus only (no selection), right button toggles selection — and a left double-click still opens the file. That's exactly how TC works. In Opus, "Set focus (no select)" matches the TC left button perfectly, except double-click-to-open is missing.

Is that suppression intended, and is there a way to get double-click-to-open with "Set focus (no select)"?

(Minor related point: with "Full toggle" on the right button, a quick double-click does open files — there I'd prefer it off. Per-button control over double-click-to-open would solve both.)

Thanks in advance,
Frank