"Show" button for image previews is too small or invisible on images with a short height

[MisguidedEmails]

Steps to reproduce

1. Enable "Hide image & video previews" in Developer settings
2. Send an image with quite a long width, but a short height
3. Notice that "show" button scales with the image itself, not with the surrounding box (see screenshot)

If the image is "thin" enough, the show button isn't visible, and clicking the "surrounding" preview box does not count.

The image shows 3 messages, each with an image with a "taller" aspect ratio than the last. The "show" button only fills the image, not the preview box. It ranges from being invisible (thus hard to click), to it being clipped.

A practical example where this issue showed up was someone sharing a line from their terminal.

Outcome

What did you expect?

Show button to be the same size, regardless of the aspect ratio of the image.

What happened instead?

The Show button is scaled to fit the image, resulting in hard to click button. Or it not showing up at all.

Your phone model

No response

Operating system version

No response

Application version and app store

Element X Android - 0.7.3 (GitHub Release) and 0.7.2 (G-play)

Homeserver

No response

Will you send logs?

No

Are you willing to provide a PR?

No