Can't build/upgrade Blight towers sometimes

Sometimes a Blight tower's upgrade/build UI can get "stuck" and clicking that tower's UI won't do anything. Roughly 1 out of 20 clickable blight towers get stuck this way. Whenever this bug happens, the same tower will(s) remain unclickable unless you leave the map & re-enter. This is happening both on Blight-ravaged maps and in regular maps with Blight encounters.