Partial Font Display Issue — Font Rendering Problem When Running AimBooster SWF on Ruffle

[iansnet]

Describe the bug

Hello,
I encountered an issue with partial font display when playing AimBooster.swf using Ruffle. The specific problem is:
The lower part of fonts on some buttons or texts in the game is missing or cut off, causing incomplete text display.
This issue does not occur in the original Flash Player, where fonts display correctly.

Additionally, I created a Simplified Chinese version of this game, but when running it in Ruffle, the Chinese text in the settings options of Custom mode does not display correctly, while in the original Flash Player it displays normally.

Expected behavior

Fonts should display completely and consistently with the original Flash Player.

Content Location

Original game download link：
http://www.aimbooster.com/AimBooster.swf

Simplified Chinese version files：
AimBooster_CHS.zip

Steps to Reproduce:
1）：Use the latest version of the Ruffle client to open AimBooster.swf.
2）：Enter Training mode and select any sub-mode, or choose any game mode and start it, then exit to the results screen.
3）：Notice that the lower part of the fonts is missing or not fully displayed.
4）：After entering Training mode and selecting Custom mode, the Chinese annotations in the settings panel fail to display properly.

Affected platform

Desktop app

Operating system

Windows 11

Browser

N/A

Additional information

Thank you to the development team for your hard work. I look forward to this issue being resolved!

[iansnet]

In addition, in the settings panel of Custom mode, scrolling the menu with the mouse wheel moves the content as expected, but the scrollbar on the right does not update its position accordingly.

[iansnet]

Another issue is that, in the settings panel of Custom mode, the text cursor does not display correctly at the last character of each line.

[kjarosh]

Text appears to be cut off because Flash culls glyphs based on lines, and we're culling glyphs based on bounds. In this case bounds are smaller than the text.

The second issue with missing text is due to glyph fallback issues for device text.

[kjarosh]

In addition, in the settings panel of Custom mode, scrolling the menu with the mouse wheel moves the content as expected, but the scrollbar on the right does not update its position accordingly.

Another issue is that, in the settings panel of Custom mode, the text cursor does not display correctly at the last character of each line.

Please report separate issues for those bugs, as it's impossible to track everything in one issue. Let's focus on text stuff here.

[iansnet]

In addition, in the settings panel of Custom mode, scrolling the menu with the mouse wheel moves the content as expected, but the scrollbar on the right does not update its position accordingly.

Another issue is that, in the settings panel of Custom mode, the text cursor does not display correctly at the last character of each line.

Please report separate issues for those bugs, as it's impossible to track everything in one issue. Let's focus on text stuff here.

Hi, thanks for the guidance! I have split the issues as suggested: #21413 for the text cursor problem and #21414 for the scrollbar issue.