[Bug]: webui loses track of progress if PNG info is used during image generation

[ghost]

Is there an existing issue for this?

• [X] I have searched the existing issues and checked the recent builds/commits

What happened?

During txt2image generation, if I use PNG info tab, then return to txt2img tab, progress is no longer displayed and interrupt/skip buttons are unavailable. I can only see image generation going on in the console window.

Steps to reproduce the problem

1. Go to .... txt2img tab, click Generate
2. go to PNG Info tab, drop an image
3. go to txt2img tab

What should have happened?

progress still shown, interrupt/skip buttons not hidden

Commit where the problem happens

No response

What platforms do you use to access UI ?

Windows

What browsers do you use to access the UI ?

Mozilla Firefox

Command Line Arguments

--precision full --no-half --use-cpu all --skip-torch-cuda-test --autolaunch --gradio-img2img-tool color-sketch --ckpt ./models/Stable-diffusion/sd-v1-4.ckpt

Additional information, context and logs

No response

[smolten]

Second The actual dropping of a New Image is what seems to break the connection - There is no bug if you only click "Send to..." (with an image there, before you started text2img) or drop an Identical Image, which is ignored