The two options, here, highlighted when I moused over them. However, the explanatory tooltips didn't appear and neither option responded to being clicked.
The workaround was to click "Menu" in the upper left, then resume the game. Then I clicked "Subsidies (T2)" and the game continued normally.
In case it's relevant, the "Apply Tech" that's mostly obscured is in regards to "Tactical Systems", add 2 Combat when planets are already producing Combat.