Transparency check box in border color disappeared
When I try to change the border color under the prepare tool I am not prompted with a transparency check box in the color select window that pops up as I previously was. Ive checked other PDF's that I've created and I am coming across the same issues.
The fix for this issue has been officially rolled out with latest Acrobat update
More details here: https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/continuous/dccontinuousoctober2018.html#dccontinuousoctobertwentyeighteen