Created attachment 200092 [details] The mentioned example The issue was addressed for V 24.2.7.2 in https://ask.libreoffice.org/t/120192 and is still present in V 25.2.1.2 (which was used for the example). I could neither find a realted remark in old releas notes nor ion any help text or guide, nor a reasonable guess for what the behaviour might have been introduced. The attached example isn't a Math document because LibO refuses to store one. Having embedded one as OLE in Writer it is stored but can't be activated for edditing after lo0ading.
Created attachment 200093 [details] A minimal sample Opened OK ("make it simple") in 7.0 Opened "make simple" in 7.1 Failed to open starting with 7.2
It got support since 7e2c35324c54646f53f0fa14b7bce07e1da73c0b (bug 109338).
The failure to open the file started in one of 96e9870b3204eabc6bca1c92f714f80592a54102 d76b9cc0e96e06777c683ba172e04454c8893c84 a838ccb411dfe7ff6edf9503ae23ea655b99e1e6 51ecbd06bdef5d9c0738703f16160799f261c860 7c959884d9a4a3f187a79cbb01407cd20d92a2f8 The first and the last look relevant (esp. the last one).
I should mention: The example .odt I attached to the original report SHOWS a stored "preview" of the formula, but the embedded OLE object has an empty (0 characters) content.xml.
(In reply to Mike Kaganski from comment #3) > The failure to open the file started in one of > 96e9870b3204eabc6bca1c92f714f80592a54102 > d76b9cc0e96e06777c683ba172e04454c8893c84 > a838ccb411dfe7ff6edf9503ae23ea655b99e1e6 > 51ecbd06bdef5d9c0738703f16160799f261c860 > 7c959884d9a4a3f187a79cbb01407cd20d92a2f8 > > The first and the last look relevant (esp. the last one). Range confirmed by a QA mentee with 7.2 Windows repo.