I installed BMP180 Sensor but no readout. Adafruit Test and i2cdetect also. Pics enclosed.
It’s clearly not your wiring since you’re reading it from the command line OK. It almost looks like the widget didn’t add right on our side. The giveaway to me is that it’s not listed in the left sidebar like the DS18B20 widget is.
I’d reboot the pi to see if it picks up some values and adds itself to the sidebar. If that doesn’t do it, try removing the BMP180 widgets (both of them), and then recreating from the Add New > Device/Widget menu.
It could also be a cache issue. You can try Ctrl+f5 or use your browser tools to clear all cache.