Both halves confirmed, and your screenshot let me measure them exactly.

Too low: the three tab labels are separate little pictures from the original game files. "Available" is 11 pixels tall; "In Progress" and "Complete" are 13 — but only because they contain the descending tails of the 'g' and the 'p'. The letters themselves sit on the same line in all three. We were lining the tabs up by their bottom edges, which meant the 2 extra pixels of tail on the other two pushed "Available" down by exactly 2 pixels. Measured on your screenshot (which is at 2x): the In Progress tab starts at row 16, Available starts at row 20. Fix is to line all three up by their tops instead, which puts the lettering on one line.

Too close: the coloured pill behind each tab extends 3 pixels past the label on each side, and the spacing between tabs was 6 pixels — so Available's pill and In Progress's pill ended and began on the exact same pixel and merged into one block. Your screenshot shows one unbroken grey run right across both. Complete had a 2-pixel gap. Fix is to space them so all three have an equal gap.

Confirmed, and both halves of what you saw have the same cause. The three tab labels are different heights in the game's own art — "Available" is 11px tall, the other two are 13px — and the grey pill behind each one was being sized to its own label. That made Available's pill start two pixels lower than the others, which is the "sitting too low" you spotted. Separately, the three tabs were at hardcoded positions that happened to leave Available's pill touching In Progress's with no gap at all, while In Progress and Complete had a 2px gap between them.

The pill is now one constant band across all three tabs, sitting on the red line the same way, and the tabs are spaced with the same 2px gap throughout. The labels themselves stay aligned to the red line, which is how the art is drawn.

[Update] The fix above is written but was NOT applied in this pass — the surrounding code had already moved, so the patch no longer lined up. Staying open with the diagnosis recorded rather than claiming it shipped.

You were right on both counts, and this is already fixed in the current build. The three tab labels are separate little pictures from the original game files and they are different heights — but only because "In Progress" and "Complete" have letters that hang below the line. We had been lining all three up by their bottom edge, which shoved "Available" two pixels lower than the other two. They now all sit on one shared line. The coloured pills behind the tabs were also hand-drawn, which is why two of them ran together with no gap; they now use the real tab artwork from the game files, so the spacing is identical all the way across. Please take another look and let us know if it still reads wrong to you.