Since [0] (fix for T95591), the tweak tools fallback action used tweak
instead of press.
This was enabled so tools such as "Measure" & "Add Cube" could use
fallback tools (otherwise is wasn't possible to add a new ruler without
also selecting for e.g.), however this is of limited use since both
tools support dragging anywhere to activate, making them less useful
with other selection tools beside tweak (box/lasso for e.g.).
Resolve by disabling the fallback option for tools where using the
tweak tool to select is undesirable. Selection by clicking with
"Measure" & "Add Cube" is still supported as this is also set in the
3D view's key-map.
[0]: 0e51defcf4