Inline image support in ProtonMail with regard to other PGP softwares

Hi

It seems that ProtonMail web ui doesn't handle inline image in PGP encrypted email sent by other PGP softwares. When an email is embedded inline, I also need to refresh the web page in order for the image to be shown as an attachment.

This is how the email looks like in other PGP softwares

I've done some tests and:

• The inline image problem doesn't happen with unencrypted email.
• Inline images created by ProtonMail composer seem to be correctly handled by other PGP softwares.
• Inline images created by ProtonMail composer works well when emails are between ProtonMail accounts

I have tested with the following PGP softwares:

• GPGTools
• Thunderbird
• Canary Mail
• FlowCrypt

As this is rather a software bug and not related to my account, I create a GitHub issue instead of using the "reporting bug" inside ProtonMail web app.

Please complete the following checklist (by adding [x]):

• [X ] I have searched open and closed issues for duplicates
• [ X] This isn't a feature request
• [ X] This is not a report about my app not working as expected