Thermometer attached but not reading

[KatieWoe]

For phetsims/qa#268. Found while making a gif for another issue. Unsure how to reproduce at the moment.
The thermometer is attached to the beaker and is moving along with it. However, it is not the correct color and is not displaying the temperature.
https://drive.google.com/file/d/1kgYv_obHYBZT8ImxC4JrFpPYeLHSq71Q/view?usp=sharing

[ariel-phet]

@KatieWoe assigning to you until reproducible steps can be found.

[chrisklus]

Yeah, I've been trying to reproduce for a while but with no luck. 10 points to anyone who can.

[phet-steele]

1. Fresh load on Intro screen.
2. Pause
3. Grab a thermometer out of its box and just put it to the side for now.
4. Take a beaker (although I find this WAY easier to do with a block) and place it over the thermometer box in the top left.
5. Take your thermometer from step three and try to put it back into its box.

May take some tries (although I get it first try every time with a block) but when you do it correctly, it will look like the thermometer has returned to its box. This is evidenced by it being layered behind your beaker/block.

6. Drag your beaker/block away from the box and the thermometer will snap to your object and not read temperature.

[ariel-phet]

OK, I reproduced this bug. Marking as deferred.

This is odd and should be fixed, but I think it is uncommon enough to fly for 1.0

In addition, clicking the thermometer immediately fixes the issue (and feels very natural to do when it is layered behind the block).

[chrisklus]

Wow, nice @phet-steele!

[KatieWoe]

This is actually slightly different from what I'm seeing. I just figured out what happened and its a bit more concerning @ariel-phet. Also not sure how it took me so long to reproduce.
Steps:

1. Move a thermometer onto a beaker
2. Hit the orange reset button
3. Pick up the beaker from step one.

[ariel-phet]

@chrisklus --not the bug @phet-steele found, but the bug @KatieWoe found in #195 (comment) seems worthy of fixing if possible. Seems something is not getting reset properly and the bug is quite easy to reproduce following the steps.

[chrisklus]

Should be fixed, @KatieWoe please test.

[KatieWoe]

This does seem fixed on master

[chrisklus]

Good deal, thanks @KatieWoe. Since that is fixed, and the bug described in #195 (comment) is no longer possible since dragging model elements on pause was disabled in #202, I'm going to close.