Create a new Impress document; insert a formula. Save as ODP, and reopen in read-only mode. Double-click the formula. It is expected that the formula is not edited. In fact, it opens in edit mode, allows changes, the result is shown in the document, and it marks the document modified, asking to save on close.
https://gerrit.libreoffice.org/c/core/+/177930
Mike Kaganski committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/5950fe86b84bb062e88034e382fc5df90bb1e98c tdf#164213: don't activate OLE objects in read-only mode It will be available in 25.8.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Mike Kaganski committed a patch related to this issue. It has been pushed to "libreoffice-25-2": https://git.libreoffice.org/core/commit/1070d93d7536470d9beed29c7a458646029fb40e tdf#164213: don't activate OLE objects in read-only mode It will be available in 25.2.0.0.beta2. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.