Dear members of the Oxygen support team and of the user group, I have a question concerning the IMPERMANENCE of open tabs in Oxygen projects. Mor precisely, I am currently working on several ancient texts, for which I am preparing electronic editions (in a progressively changing XML format) and each text has its own project. When I exit Oxygen, I usually leave several tabs open in the currently open project, and I expect to find themselves still open when I restart Oxygen (and I can see that Oxygen reloads the open files, whih can take time because many files are bulky and contain complex structures with possibly tens of thousands of elements. When I switch from one project to another one (using the "Reopen project" in the "Project" menu) I have also come to expect that I shall find the same open tabs as I had left open during the previous editing session for the same project (which is therefore "virtually open") Howevever, I have recently noticed that this does not always happen. On several occasions, I have had to individually reopen files, after using the "Reopen project" (which currently lists 29 projects in its menu) This being said, I can now restate my question. -- is there a limit in the number of open tabs which can be remembered? (or in the number of virtually open projects between which one can smoothly navigate) -- can discontinuities [in remembering] be caused by the installation of a new build (or a new version)? Thanks for clarifications -- Jean-Luc https://twitter.com/JLC1956 https://univ-paris-diderot.academia.edu/JeanLucChevillard